Get sql from ms access. Intro. Mova query SQL Wikipedia query SQL query access
One SQL query can be nested up to another. Pіdzapit - є not scho іnshe, like a zap of the middle zapitu. As a rule, pidzapit vikoristovuetsya in the construction WHERE. Ale mozhlivі th іnshі zasobi vykoristannya pіdzapitіv.
Request Q011. Information about products is displayed from the m_product tables, the codes of which are in the m_income tables:
SELECT*
FROM m_product
WHERE id IN (SELECT product_id FROM m_income);
Request Q012. A list of products from the m_product table is displayed, there are no codes for the m_outcome table:
SELECT*
FROM m_product
WHERE id NOT IN (SELECT product_id FROM m_outcome);
Request Q013. For this SQL request, a unique list of codes and product names is displayed, the codes of which are in the m_income table, but there are none in the m_outcome tables:
SELECT DISTINCT product_id, title
FROM m_income INNER JOIN m_product
ON m_income.product_id=m_product.id
WHERE product_id NOT IN (SELECT product_id FROM m_outcome);
Request Q014. A unique list of categories will be displayed in the m_category table, the names of which begin with the letter M:
SELECT DISTINCT title
FROM m_product
WHERE title LIKE "M*";
Request Q015. An example of performing arithmetic operations on fields at the request and renaming the fields at the request (alias). For which application for a skin record about the vitrate of the product, the sum of vitrati = kіlkіst * cіna and rozmіr pributka, with pripuschennі, sho pributka become 7 vіdsotkіv vіd sumi prodavіv:
Price, amount*price AS outcome_sum,
amount*price/100*7 AS profit
FROM m_outcome;
Request Q016. Having analyzed that asking arithmetic operations, you can increase the speed of the calculation:
outcome_sum*0.07 AS profit
FROM m_outcome;
Request Q017. For additional instructions INNER JOIN, you can use this number of tables. At the offensive butt, fallow in the value of ctgry_id, skin record of the m_income tables, the name of the category from the m_category tables is set, until the goods lie:
SELECT c.title, b.title, dt, amount, price, amount*price AS income_sum
FROM (m_income AS a INNER JOIN m_product AS b ON a.product_id=b.id)
INNER JOIN m_category AS c ON b.ctgry_id=c.id
ORDER BY c.title, b.title;
Request Q018. Such functions like SUM - sum, COUNT - quantity, AVG - arithmetic mean, MAX - maximum value, MIN - minimum value are called aggregate functions. The stench takes on an impersonal meaning, and after them, the pieces turn a single meaning. The butt of the motherfucker sumi additional watering amount and price for the additional aggregate function SUM:
SELECT SUM(amount*price) AS Total_Sum
FROM m_income;
Ask Q019. Butt of vikoristannya kіlkoh aggregate functions:
SELECT Sum(amount) AS Amount_Sum, AVG(amount) AS Amount_AVG,
MAX(amount) AS Amount_Max, Min(amount) AS Amount_Min,
Count(*) AS Total_Number
FROM m_income;
Request Q020. For this butt, the sum of all goods with code 1 was insured, received from red 2011:
SELECT
FROM m_income
WHERE product_id=1 AND dt BETWEEN #6/1/2011# AND #6/30/2011#;
Request Q021. The next SQL query calculates how much goods were sold, which can be code 4 or 6:
SELECT
FROM m_outcome
WHERE product_id=4 OR product_id=6;
Request Q022. Calculated for the same amount sold on 12 March 2011 to the date of the goods that can be code 4 or 6:
SELECT Sum(amount*price) AS outcome_sum
FROM m_outcome
WHERE (product_id=4 OR product_id=6) AND dt=#6/12/2011#;
Request Q023. The order is like that. Calculate the total amount of money purchased for goods in the category "Bakery products".
To accomplish this task, it is necessary to operate with three tables: m_income, m_product and m_category, because:
- quantity and quantity of purchased goods are taken from m_income tables;
- code of the category of skin product is taken from the tables m_product;
- The name of the category title is taken from the table m_category.
To complete this task, we speed up the following algorithm:
- assigning the category code "Bakery products" from the m_category table for additional power;
- z'єdnannya tables m_income and m_product for the assigned category of leather goods;
- calculation of the sum to the income (= k_lk_st * price) for the goods, the category code of any other code, designated by the higher-appointment p_dzapit.
FROM m_product AS a INNER JOIN m_income AS b ON a.id=b.product_id
WHERE ctgry_id = (SELECT id FROM m_category WHERE title="(!LANG:(!LANG:Bakery)"); !}!}
Request Q024. The task of calculating the total amount of purchased goods in the category "Bakery products" according to the following algorithm:
- skin record of the m_income table, fallow of the product_id value, from the m_category table, enter the name of the category;
- see records, for which the category is more advanced "Bakery products";
- Calculate the amount of income = k_lk_st * price.
SELECT Sum(amount*price) AS income_sum
FROM (m_product AS a INNER JOIN m_income AS b ON a.id=b.product_id)
WHERE c.title="(!LANG:(!LANG:Bakery"; !}!}
Request Q025. For this butt, the number of goods listed was calculated:
SELECT COUNT(product_id) AS product_cnt
FROM (SELECT DISTINCT product_id FROM m_outcome) AS t;
Request Q026. The GROUP BY instruction is used to group records. Sound records are grouped according to the meaning of one number of waterings, and how often the skin group is zastosovuetsya whether it is an aggregate operation. For example, an offensive request to store information about the sale of goods. So a table is generated, in which the names of the goods will be named in that amount, for which the stench is sold:
SELECT title, SUM(amount*price) AS outcome_sum
FROM m_product AS a INNER JOIN m_outcome AS b
ON a.id=b.product_id
GROUP BY title;
Request Q027. Call about sales by category. So a table is generated, in which category of goods will be named, the total amount, for which goods of these categories are sold, that is the average amount of sales. The ROUND function of the vikoristan for rounding the average value to a hundredth part (another sign after the splitter of the whole and shot parts):
SELECT c.title, SUM(amount*price) AS outcome_sum,
ROUND(AVG(amount*price),2) AS outcome_sum_avg
FROM (m_product AS a INNER JOIN m_outcome AS b ON a.id=b.product_id)
INNER JOIN m_category AS c ON a.ctgry_id=c.id
GROUP BY c.title;
Request Q028. Calculated for a leather product, the average amount of income is not less than 500:
SELECT product_id, SUM(amount) AS amount_sum,
Round(Avg(amount),2) AS amount_avg
FROM m_income
GROUP BY product_id
HAVING Sum(amount)>=500;
Request Q029. For whom the bill is calculated for the skin product, the amount and average value of the income, zdіysnenih at another quarter of 2011. If the total amount for the arrival of the goods is not less than 1000, then you can get information about this product:
SELECT title, SUM(amount*price) AS income_sum
FROM m_income a INNER JOIN m_product b ON a.product_id=b.id
WHERE dt BETWEEN #4/1/2011# AND #6/30/2011#
GROUP BY title
HAVING SUM (amount * price) >= 1000;
Request Q030. For certain types, it is necessary to make a skin record of a certain table; a skin record of another table; which is called Cartesian creation. The table, which is settled in such a case, is called the table of Descartes. For example, if a table A has 100 entries and a table has 15 entries, then Descartes's table will have 100 * 15 = 150 entries. Coming forward one by one the skin record of the m_income table with the skin record of the m_outcome table:
SELECT *FROM m_income, m_outcome;
Request Q031. An example of grouping records for two fields. The next step is to ask SQL to calculate the amount of goods, according to the skin postal worker, that you need to get:
SUM(amount*price) AS income_sum
Request Q032. An example of grouping records for two fields. The next charge is to calculate for the skin care worker the amount and number of yoga products sold by us:
SELECT supplier_id, product_id, SUM(amount) AS amount_sum,
SUM(amount*price) AS outcome_sum
GROUP BY supplier_id, product_id;
Request Q033. This butt has two tips for drinking (q031 and q032) of the same as drinking. The results of these requests by the LEFT JOIN method are combined into one string. The next step is to ask for information about the number and amount of deliveries and sales of products according to the skin postal order. If you have respected the fact that such a product is already available, and if it has not yet been sold, then the outcome_sum bill for this record will be empty. It is also necessary to designate that the Danes will be asked for more than the butt of a vikoristannya folded drinks like a pidzapit. The productivity of this SQL query with a great data commitment is sumnivnoy:
SELECT*
FROM
SUM(amount*price) AS income_sum
ON a.product_id=b.id GROUP BY supplier_id, product_id) AS a
LEFT JOIN
(SELECT supplier_id, product_id, SUM(amount) AS amount_sum,
SUM(amount*price) AS outcome_sum
FROM m_outcome AS a INNER JOIN m_product AS b
ON a.product_id=b.id GROUP BY supplier_id, product_id) AS b
ON (a.product_id=b.product_id) AND (a.supplier_id=b.supplier_id);
Request Q034. This butt has two tips for drinking (q031 and q032) of the same as drinking. The results of these requests by the RIGTH JOIN method are combined into one string. The next step is to send a message about the amount of payments the skin client has made to him by payment systems and the amount of investments he has made. The next step is to ask for information about the number and amount of deliveries and sales of products according to the skin postal order. If you have to pay attention to the fact that such a product is already sold, if not yet available, then the income_sum bill for this record will be empty. The presence of such empty containers is an indicator of a pardon in the form of sales, so it is necessary before the sale, if the goods are needed:
SELECT*
FROM
(SELECT supplier_id, product_id, SUM(amount) AS amount_sum,
SUM(amount*price) AS income_sum
FROM m_income AS a INNER JOIN m_product AS b ON a.product_id=b.id
GROUP BY supplier_id, product_id) AS a
RIGHT JOIN
(SELECT supplier_id, product_id, SUM(amount) AS amount_sum,
SUM(amount*price) AS outcome_sum
FROM m_outcome AS a INNER JOIN m_product AS b ON a.product_id=b.id
GROUP BY supplier_id, product_id) AS b
ON (a.supplier_id=b.supplier_id) AND (a.product_id=b.product_id);
Request Q035. A call is made about the amount of income and spending on groceries. For which the list of products is created behind the m_income and m_outcome tables, then for the skin product, the sum of yogo incomes is calculated for the th list behind the m_income table and the amount of yogo costs behind the m_outcome table:
SELECT product_id, SUM(in_amount) AS income_amount,
SUM(out_amount) AS outcome_amount
FROM
(SELECT product_id, amount AS in_amount, 0 AS out_amount
FROM m_income
UNION ALL
SELECT product_id, 0 AS in_amount, amount AS out_amount
FROM m_outcome) AS t
GROUP BY product_id;
Request Q036. The EXISTS function turns the value to TRUE, as if it were passing in an anonymous search element. The EXISTS function turns the value FALSE, as if the passed multiple is empty, so that no elements are left behind. The next step is to enter the codes of goods, which can be found in the m_income tables, and in the m_outcome tables:
SELECT DISTINCT product_id
FROM m_income AS a
WHERE EXISTS(SELECT product_id FROM m_outcome AS b
Request Q037. Product codes are displayed, which are similar to the m_income tables, as well as in the m_outcome tables:
SELECT DISTINCT product_id
FROM m_income AS a
WHERE product_id IN (SELECT product_id FROM m_outcome)
Request Q038. Product codes are displayed, which are displayed as in the m_income tables, but not in the m_outcome tables:
SELECT DISTINCT product_id
FROM m_income AS a
WHERE NOT EXISTS(SELECT product_id FROM m_outcome AS b
WHERE b.product_id=a.product_id);
Request Q039. A list of goods is displayed, the amount of sale of which is the maximum. The algorithm is like this. To the skin product, the amount of sales is calculated. Let's get a maximum of these sums. Potіm, for a leather product, I will again calculate the sum of yogo sales, and display the code і sum of prodavіv tovarіv, the sum of prodav_v such dorіvnyuє maximum:
SELECT product_id, SUM(amount*price) AS amount_sum
FROM m_outcome
GROUP BY product_id
HAVING SUM(amount*price) = (SELECT MAX(s_amount)
FROM (SELECT SUM(amount*price) AS s_amount FROM m_outcome GROUP BY product_id));
Request Q040. The reserved word IIF (smart operator) is chosen to evaluate the logical expression and the difference between the results (TRUE or FALSE). At the attacking butt, the delivery of goods is considered “small”, for example, the quantity is less than 500. In the second case, the quantity of goods is greater or more 500, the delivery is considered “great”:
SELECT dt, product_id, amount,
IIF(amount<500,"малая","большая") AS mark
FROM m_income;
Request SQL Q041. As the IIF operator wins a few times, it is better to replace it with the SWITCH operator. The SWITCH operator (multiple selection operator) is victorious for evaluating the logical expression and vikonannya tієї chi іnshої dії stale in the result. At the offensive butt, a part_ya is vowed “small”, if the quantity of the goods in the partії is less for 500. Іnakshe, so that the kіlkіst of the goods is big or dorіvnyuє 500, the part_ya is vvazhaєs “great”:
SELECT dt, product_id, amount,
SWITCH(amount<500,"малая",amount>=500,"great") AS mark
FROM m_income;
Request Q042. <300 не выполняется, то проверяется является ли количество товаров в партии меньше 500. Если размер партии меньше 500, то она считается «средней». В противном случае партия считается «большой»:
SELECT dt, product_id, amount,
IIF(amount<300,"малая",
IIF(amount<1000,"средняя","большая")) AS mark
FROM m_income;
Request SQL Q043. At the attacking demand, if there is a quantity of goods in the party, if there is less than 300, then the party is considered “small”. Otherwise, that's just the amount<300 не выполняется, то проверяется является ли количество товаров в партии меньше 500. Если размер партии меньше 500, то она считается «средней». В противном случае партия считается «большой»:
SELECT dt, product_id, amount,
SWITCH(amount<300,"малая",
amount<1000,"средняя",
amount>=1000,"large") AS mark
FROM m_income;
Query SQL Q044. At the offensive demand, sales are divided into three groups: small (up to 150), medium (from 150 to 300), large (300 and more). For the skin group, the sum of the sum is calculated:
SELECT Category, SUM(outcome_sum) AS Ctgry_Total
FROM (SELECT amount*price AS outcome_sum,
IIf(amount*price<150,"малая",
IIf(amount*price<300,"средняя","большая")) AS Category
FROM m_outcome) AS t
GROUP BY Category;
Request SQL Q045. The DateAdd function is used to add days, months or months to the date and then to the new date. Next request:
1) until date from the dt field, add 30 days and display a new date in the dt_plus_30d field;
2) before date from the dt field, add 1 month and display the new date in the dt_plus_1m field:
SELECT dt, dateadd("d",30,dt) AS dt_plus_30d, dateadd("m",1,dt) AS dt_plus_1m
FROM m_income;
Query SQL Q046. The DateDiff function is recognized for calculating the difference between two dates in different units (days, months, aborts). The next step is to calculate the difference between the date in the field dt and the current date in days, months and times:
SELECT dt, DateDiff("d",dt,Date()) AS last_day,
DateDiff("m",dt,Date()) AS last_months,
DateDiff("yyyy",dt,Date()) AS last_years
FROM m_income;
Query SQL Q047. The number of days is calculated from the day of receipt of the goods (table m_income) to the current date for additional functions DateDiff and the term of attachment is set (table m_product):
DateDiff("d",dt,Date()) AS last_days
FROM m_income AS a INNER JOIN m_product AS b
ON a.product_id=b.id;
Query SQL Q048. Calculated kіlkіst dnіv from the day of delivery of the goods to the current date, then perevіryaєtsya chi perevishuє cіlkіst termіn pridatnostі:
SELECT a.id, product_id, dt, lifedays,
DateDiff("d",dt,Date()) AS last_days, IIf(last_days>lifedays,"So","Hi") AS date_expire
FROM m_income a INNER JOIN m_product b
ON a.product_id=b.id;
Query SQL Q049. Calculate kіlkіst mіsyatsіv from the day of delivery of the goods to the current date. The month_last1 column calculates the absolute number of months, the month_last2 column calculates the number of new months:
SELECT dt, DateDiff("m",dt,Date()) AS month_last1,
DateDiff("m",dt,Date())-iif(day(dt)>day(date()),1,0) AS month_last2
FROM m_income;
Request SQL Q050. A quarterly report about the quantity and amount of purchased goods for 2011 will be displayed:
SELECT kvartal, SUM(outcome_sum) AS Total
FROM (SELECT amount*price AS outcome_sum, month(dt) AS m,
SWITCH(m<4,1,m<7,2,m<10,3,m>=10.4) AS kvartal
FROM m_income WHERE year(dt)=2011) AS t
GROUP BY block;
Request Q051. Nastupny zapit dopomagaє z'yasuvati, chi far away to the coristuvachas to enter into the system іnformacіyu about the return of the goods for a larger amount, nіzh the sum of the arrival of the goods:
SELECT product_id, SUM(in_sum) AS income_sum, SUM(out_sum) AS outcome_sum Request Q052. The numbering of the rows, if they are rotated by request, is realized in a different way. For example, it is possible to renumber rows of information prepared in MS Access by MS Access itself. You can also renumber for help with programming, for example, VBA or PHP. However, it is sometimes necessary to work in the SQL query itself. Also, the next step will number the rows of the m_income tables, up to the order of the increasing value of the ID field: SELECT COUNT(*) as N, b.id, b.product_id, b.amount, b.price Request Q053. Show five leaders among products from the sum of sales. Seeing the first five entries is required for additional instructions TOP: SELECT TOP 5, product_id, sum(amount*price) AS summa Request Q054. Display five leaders of the middle products by the amount of sales and number the rows in the result: SELECT COUNT(*) AS N, b.product_id, b.summa Request Q055. The next SQL query shows the use of mathematical functions COS, SIN, TAN, SQRT, ^ and ABS in MS Access SQL: SELECT (select count(*) from m_income) as N, 3.1415926 as pi, k, Microsoft Access is a DBMS of a relational type, in a reasonable balance of all the features and capabilities typical for modern database management systems. The relational database makes it easier to search, analyze, support and defend data, shards of stench are saved in one place. Access in translation from English means "access". MS Access is one of the most sophisticated, flexible and simplest DBMSs of all. You can create more add-ons without writing the same series of programs, but if you need to create more smoothly, then for this MS Access step, I’ll try my best to program - Visual Basic Application. The popularity of the Microsoft Access DBMS is driven by the following reasons: Availability and intelligence allow Access to be one of the best systems for creating database management software; Possibility of using OLE technology; Integration with the Microsoft Office package; New support for web technologies; Visual technology allows you to consistently work out the results of your actions and correct them; The appearance of a great set of "masters" for the development of objects. The main types of objects, from which the program works, are: table, input, form, call, side, macro, module. The table is the object that is victorious for the sake of data. Skin table to store information about the object of the singing type. The table contains fields (stovptsі), from which different data are taken, and records (rows). For the skin table, the primary key is responsible for the primary key (one field, which may be unique for the skin record, or the number of fields, the multiple values for the skin record are unique), which is the unambiguous identifier of the skin record of the table. To improve the security of access to data, the margins of the fields of the tables (or their order) can be covered by indexes. Index - zasіb, which will speed up the search for sorting in the table for the ranking of the selection of key values, which allows you to ensure the uniqueness of the rows in the tables. The primary key of the table is automatically indexed. It is not allowed to create indexes for irrigation from other types of data. Zapit - tse object, which allows coristuvachevy to take the necessary data from one or more tables. For additional drinking, you can also create new tables, vicorist data of one or the other tables, as you already know. The largest extension of the type of requests is a request for a call. Ask for a selection of data for one or more tables according to the given minds, and then we sort them out in the required order. Form - tse object, appointments mainly for the introduction of data, displaying them on the screen or being read by the program. Zvіt - tse object, appointments for the creation of a document, whichever way you can have orders or inclusions to the document in your program. visual development of the programming base Storinka – selected for access to data in the Access streaming database. A macro is an object that is structurized by a description of one or the other dekіlkoh dіy, yakі is guilty of the viscounty of Access y vodpovіd on the sing podіyu. A module is an object that can be used by programs in Microsoft Visual Basic, which allows you to split the process on other parts and show pardons, as you can not know about macros. The launch of the DBMS is available from Start - Programs - Microsoft Access. Vikonati command File - Create. The robot interface with data base objects is unified. According to the cutaneous transmission of the standard operating modes: Create (create the structure of objects); Constructor (change the structure of objects); Vіdkriti (Review, Launch - assignments for work with data base objects). SQL (Structured Query Language) from 1986. є standard my relational databases. Zokrema, wins in Access and Excel programs. SQL - informational and logical language, recognized for the description of data that are saved, excerpts of data, what are saved, and modification of data. More often than not, SQL is the main way to work with the data base and a small collection of commands (operators) that allow creating tables, adding new records to the table, editing records from the table, deleting records and changing table structures. At the link with the complication, the language of SQL has become more applied to my programming, and the coristuvachi have taken away the ability to vicorate the visual retailers of the drinks. Mova SQL є sukupnіstyu operatorsіv: data definition operators (Data Definition Language, DDL); data manipulation operators (Data Manipulation Language, DML); data access operators (Data Control Language, DCL); Transaction Control Language (TCL) operators. Drinking in MS Access is saved and implemented for the help of SQL moves. If you want more drinks, you can create graphical methods (drink for a day), the stench is saved like SQL instructions. For a number of options (for example, for suitable queries), you can tweak more than the language of SQL. SQL goes to non-procedural moves. Vin simply declares what needs to be done, and the vicariance is entrusted to the DBMS (database management system). SQL has three-valued logic. The order from the traditional logical values TRUE and FALSE wins NULL (INVISIBILITY or DATA SUMMARY). Operations are performed on multiple sets of data, but not on fixed elements, as with other programming languages. The query on mov SQL is composed of instructions. Skin instructions can replace the dekilka of propositions. SQL is one of the most widely used programming languages for creating data base management, as well as for conducting various activities from the data themselves. As practice shows, it is easy to master and master the standard English language vocabulary as much as possible. Like and be-yak іnsha mova programuvannya, SQL can control the logic and syntax, typing the basic commands and the rules of their choice. You can see the standard ones, appearing from their recognition. As the basis of the unspoken classification, you can take the following sets, like: Commands to encourage drinking. Commands for calling procedures and functions. Trigger commands and system tables. Set combinations for work with the date and string changes. Teams for work with data and tables. This classification can be continued indefinitely, but the main SQL command sets will be chosen according to these types. Looking at the classification of the language, it is impossible not to guess about those that are universal, about what to say the sphere of victoriousness. Tsya mova programming and її raznovidi zadіyanі not only in the standard medium, but in other programs, yakі, so chi іnakshe, you won. The SQL domain can be viewed from the perspective of office software, MicrosoftAccess. Mova, or rather, її raznovid - MySQL, allows you to administrate data bases on the Internet. Learn the middle of Oracle's development of the victorious basis of your requests for SQL commands. One of the simplest applications for using movies for database programming is the Microsoft Office software package. The degree of this software product was transferred to the high school course of computer science, and the eleventh class is considered the database management system MicrosoftAccess. Itself, when you have learned your addendum, learn to know my data bases and otrimuyut the basic understanding of everything that is included in the new one. Access SQL commands are primitive, obviously, as if they could be seen on a professional level. The execution of such commands is even simpler, and they are created in the attached editor code. Let's look at a specific example: SELECT Pe_SurName WHERE Pe_Name = "Mary"; Based on the syntax of the command, you can understand that, in turn, it is a short name of a person, in this case, a woman in the name of Mary, as it is stored in the Contacts database table. If you want to use SQL in Access, it's easy to understand, but sometimes you can forgive the task. Oracle is, without a doubt, the only serious competitor to Microsoft SQL Server. The very middle of the development and management is constantly building up to the full functionality of the software product of the Microsoft company, the shards of competition are the driving force for progress. Regardless of the post-supernicity, Oracle's SQL commands repeat SQL. Wanting Oracle and vvazhaetsya practically with a new copy of SQL, the logic of this system is more easily vvazhaєtsya. The Oracle system, with a different set of instructions, does not have such a collapsible structure. To see the possibilities of data base development environments, Oracle does not have a collapsible investment structure. Such a difference allows you to quickly speed up the work with tribute, ale, on the contrary, leading to an irrational memory, in a few fluctuations. The structure of the Oracle is most importantly inspired by the timing tables and the other one. Like an example: the SQL commands in my system will be analogous to the standards of the SQL language, although they are insignificantly and differently. SELECTCONCAT(CONCAT(CONCAT('Recruiter', sname), CONCAT(SUBSTR(fname, 0, 1), SUBSTR(otch, 0, 1))), CONCAT('approved for work', acceptdate)) FROM employees WHERE acceptdate > to_date ('01.01.80', 'dd.mm.yyyy'); Tsey asks for the turn of the data about spivrobitnikiv, yakі accepted to work at the singing interval of the hour. If the structure of the request is reviewed, the appearance of SQL commands in both systems is similar, except for the details. With the advent of the all-worldly web, tobto the Internet, the scope of the mov SQL is expanding. As you can see, a lot of information is collected from the merchant, but it is not chaotically stashed, but placed on websites and servers according to the same criteria. For collecting information on the Internet, as well as in other areas, without intermediary data bases, and sites - management systems. As a rule, the sites and their program code are organized by different programming languages, and the databases are based on one of the different SQL, and the database itself is created based on the MySQL web interface. The syntax and the main set of commands should be copied again from the default for all SQL, but with some additional additions, like giving it to you on the Microsoft tSQL Server view. The SQL commands are almost similar in syntax, but they have a standard set of service words. Retailing is more limited in terms of wiki and structured zapitu. For example, you can look at the application for creating a new table, the very first thing that children are taught in schools on information: $link = mysqli_connect("localhost", "root", "", "tester"); if (!$link) die("Error"); $query = "create table users( login VARCHAR(20), password VARCHAR(20) if (mysqli_query($link, $query)) echo "Table created."; elseecho "Table not created: ".mysqli_error(); mysqli_close($link); As a result of such a request, a new table "User" can be taken into account, in which there will be two fields: login and password. Syntax changed under Web, but based on MicrosoftSQLServer commands. Selecting a table for data collection is one of the main SQL tasks. For such operations, the select SQL command has been passed. Itself about it below. The rules for prompt commands are even simpler, and the select command itself in SQL will be like this. For example, є table, de є data about spіvrobіtnik, yak, for example, may im'ya Person. Let's set the date, scho from the tables it is necessary to select data about spivrobitnikiv, the date of the birth of those - from the period of the first day to the first birch of the current year, inclusive. For such a selection, it is necessary to use the SQL command, which will not have a more standard design, but the choice is: Select * from Person Where P_BerthDay >= '01/01/2016' and P_BerthDay<= ‘03/01/2016’ Vikonannya such a command to turn all the data about spivrobitnikiv, the day of the people of those who are rebuked in that period, which you have set. Somebody may be worth the task of bringing in more than a nickname, I’m the one according to my father’s spivrobitnik. For whom it is necessary to induce the trochs, otherwise, for example, in such a rank: SelectP_Name - name P_SurName - call P_Patronimic - like a father Where P_BerthDay >= '01/01/2016' and P_BerthDay<= ‘03/01/2016’ However, it’s less of a choice. Vіn, in fact, does not contribute to anything, but rather gives information. But if you fail to work on my SQL anyway, you will have to learn how to make changes to the databases, the shards of which are simply impossible without it. How to fight, you will see a troch below. Syntax of mov prompts is like vykonannya zapitіv, and y in manipulyatsіy z danimi. The main task of the database programmer is to write scripts for selections and calls, and sometimes it is necessary to make changes to the tables. The list of SQL commands for such activities is small and consists of three main commands: Insert (wire Insert). Update (prov. Update). Delete (prov. Vidality). The assignment of these commands is easy to assign, for which it will be enough to change their name. The commands are simple in victories and can’t fold the scheme of prompting, but guess what the deacons of them, with the wrong choice, can set up an incorrect shkod base. As a rule, before trying such MSSQL commands, it is necessary to think over and recover all possible traces of their selection. Vivchivshi given commands, you can fully rozpochati robot with tables of databases, they themselves modify it and make some new changes or remove the old ones. To insert data in a table, the most secure command is Insert. Incorrectly inserted data can be deleted and added to the data base again. The Insert command is recognized for inserting new data into a table, and it allows you to add both a new set and a selection. For example, let's take a look at the insert command earlier, the Person table is described. In order to insert data into the table, you need to enter the SQL command, so that you can insert all data into the table, or enter it selectively. Insert into person Select 'Grigor'ev','Vitaliy','Petrovich','01/01/1988' The commands of such a plan will automatically fill in the middle of the tables from the assigned tributes. Buvayut situation, if spіvrobіtnik not maє on batkovі, let's say, vin for exchange came pracsyuvati from Nimechchini. In such a case, it is necessary to enter the data insertion command, so that you enter to the table only those that are necessary. The syntax for such a command will be: Insertintoperson(P_Name, P_SurName ,P_BerthDay) Values('David', 'Hook', '02/11/1986') Such a command is to fill in the middle, and the answer will be null. In order to change data as a whole, the Update SQL command is victorious. It is necessary to win such a command only with a singing mentality, but it’s for sure to point out that it is necessary to make changes in some row after the number. The Update SQL command has an easy syntax. For the correct voicing, it is necessary to indicate, as data, in a certain column, in a certain record, change the varto. Dali fold the script and vikonati yogo. Let's look at an example. It is necessary to change the date of the birth of David Hooke, which was included in the table of practitioners under number 5. Set P_BerthDay = '02/10/1986' where P_ID = 5 Umova (in his script) will not let you change the date of birth in all records of the table, but it will be more necessary to update it. The very team of the programmer is the most likely to chime in, because it is not allowed to change the data in the tables, without having to worry about the exact details of all the information. With the help of Mov SQL, you can start asking, and you can use the mechanisms to work with data. As a rule, there are moments when it is necessary to win in the title of one request for a vote, written earlier. To judge logically, you need to copy the text of the selection and paste it in the right place, but you can get by with more simple solutions. Let's look at the butt, if a button for another call is shown on the working interface, let's say in Excel. Tsya operation will meet the world's needs. For such purposes, use the procedures that are saved. The commands in this type are placed in the procedure and called after the help of the SQLExec command. Let's assume that the procedure for finding the date of the nationality of practitioners was created from the previously described table Person. At this time, there is no need to write the entire request. To retrieve the necessary information, it is sufficient to select the Exec [procedure name] command and pass the parameters required for selecting the parameters. Like a butt, you can look at the mechanism for creating a procedure of this nature: CREATEPROCEDUREPrintPerson @DB smalldatetime @DE smalldatetime SELECT * kind Person FROM HumanResources.vEmployeeDepartmentHistory WHERE P_BerthDay >= @DB and P_BerthDay<= @DE ANDEndDateISNULL; This procedure will turn all the information about the pracivniks, the day of the birth of any of them will be changed at the given hour. Deyaki MS SQL-commands, one might say, constructions, allow you to organize manipulations with data, and to ensure their integrity. For such purposes, the movie has system constructions, as the programmer himself creates. Tse zvani triggers, yakі zmozhut zabezpechite control data. And here for the organization of the reverification of minds, the standard SQL-query commands are victorious. At triggers, you can create a lot of minds and a border for work with data, which will help you to do it not only with access to information, but also to remove the data, or change the insertion of data. Types of SQL commands that can be matched with triggers, not exchanged. Let's look at an example. To describe the trigger creation mechanism, then the types of SQL commands here are the same, as if from a creation procedure. The algorithm itself will be described below. We need to describe the service command to create triggers: It is necessary for any operation with data (in our case, the operation is to change data). The next step will be the introduction of tables and changes: declare @ID int. @Date smalldatetime @nID int. @nDatesmalldatetime DEclare cursor C1 to select P_ID, P_BerthDay from Inserted DEclare cursor C2 to select P_ID, P_BerthDay from deleted We set the choice of data. Then, in the title of the cursor, I will write down my mind's reaction to the new one: if @ID = @nID and @nDate = "01/01/2016" sMasseges "Vikonati operation is not possible. Date does not match" Guess what the trigger can do, and turn it off for an hour. Such a manipulation can only be carried out by a programmer, after typing the SQL SERVER commands: altertablePERSONdisabletriggerall - to enable all triggers created for this table, and, apparently, altertablePERSONenabletriggerall - to enable them. These are the most common SQL commands, but their combinations can be the most intriguing. SQL is a bit of a language bug and gives the retailer a maximum of opportunities. From the aforementioned, you can learn one single trick: knowledge of SQL language is simply necessary for those who are going to seriously take up programming. Vіn lies at the basis of all operations that are used both on the Internet and in home data bases. To the very same, the future programmer is obov'yazkovo guilty to the nobility of the impersonal commands of the move, to the one who can only help for them, so be it, to communicate with the computer. Obviously, there are not enough, like in the whole world, but the stench of the floors is insignificant, which simply darkens before the troubles. The middle of the language of SQL programming is practically the same in its own kind, even if it is universal, and the knowledge of writing scripts and codes is the basis of practically all sites. With the help of the headline of SQL, one can safely take into account its simplicity, age, yak-no-yak, the same wine making to the school program. Behind him, you can turn into a programmer-pochatkіvets, who is not familiar with the language. Addendum DBMS MS Access - tse povnotsіnny helper for the creation and maintenance of databases that are stored in tables and arrays. Since the base can be a great deal, it’s easy to know the necessary values to do it smoothly. To itself, Access has such a function as a request. Let's look at what it is, how it works, how it can be special. To learn how to write in Access, know the basics of working with a DBMS. There are two ways to vikonate the procedure: The first way gives you the opportunity to create any of the available data in manual mode, but there are a few cautions about what you can do with the Access program. Also, wines can be sorted out if you want to use the main yoga tasks. As for another way, it is necessary to take a look at the report. Knowing a person for a little click, he chooses those components, so that he will need coristuvachev for vikonnannya zapitu, and then we will quickly form the registry according to the selected key values. Even more familiarity with the DBMS, and it does not show how to create a drink in Access, the Meister program is selected. In this mode, you can find out and get acquainted with the following types of drinks: This choice is already being made at the first stage of work with Maistrom. And nadalі, dorimuyuchis clear vkazіvok, navit koristuvach-pochatkіvets it is easy to make a request. Learn from yoga by different species. This tool of work with tables collects the required data from the assigned fields. Already behind the name it is clear that this is the most popular type of drink for beginners. Yogo zruchnіst lies in the fact that such a procedure is applied to new depositors. The reason for the power, as created by Access 2010, becomes obvious after seeing the first menu of Maistre. This type of vibrator is foldable. In order to sort out, how to create crossover requests from Access for the help of "Maistra" in this mode, it is necessary to click on this function in the first week. A table will appear on the screen, in which you can select up to three stovptsіv, like rozashovanі in the original. One of the unselected fields, which were left out, may be vikoristane as the headings of the tables of the inquiry. At the third stage of the procedure (retin), one more value is selected according to the variability of the function (average value, sum, first, last). The photo shows what the crossover power was created, and what the necessary actions were made for the given parameters. As the name suggests, the main recognition of this request is the selection of all the same rows in the table for the specified parameters. Looking like this: In addition, the available choice of supplementary watering, so you can choose the right amount of water once in a few rows. To select the entries that are repeated, it is necessary to expand the list of requests and create a new folder there. Dali at the window "New zapit" select the row "Search for records that are repeated." Dalіd follow the instructions of Maystra. This is the last type of request available in the "Master - Recordings without credits" mode. In this way, the selection is carried out more quietly, if not in the same field, the table and drinks, but if already created. The Danish type is less relevant in vipadkas, if the basis of these is kіlka. All tsі chotiri types of zapіv є base point for work with foldable elements, but to give you the ability to easily rozіbratisya, how to create zapіt at the database Access. Let's figure it out, now we have to follow the descriptions of other things. The task of all simple and complex applications in the Access DBMS is in the offensive: This type of work with data bases is collapsible, shards require the participation of several tables. It is necessary that all tables have double key fields. Otherwise, the operation should not be carried out. Let's repeat, how to create a vibrator in Access. It is necessary to create a simple water supply from the choice of the necessary fields. Already here it is possible to edit the data, in order to bring them to the eyes of the bugs. Before the word, the changes made will be transferred to the exit tables, which needs to be protected at this moment. At the window of the designer, what was said, the window “Additional table” will be started. Here it is necessary to add tables, or ask for them, for which it is necessary to determine the current values. After the addition, you can refill the minds of the inquiry. For whom we need a row "Field". They need to pick up the values from the table, which will be displayed when they are asked. To complete the operation, you need to press the "Vikonati" button. This is another different kind of folding procedure, like a vimagatime in the field of basic skills of work with data bases. One of the main directives of this kind is the preparation before the creation of the results with the total tribute, as well as the evaluation of the results. How to write in Access 2007 for the help of the constructor will be looked at below. Start the procedure by selecting the data you need for a simple entry, to select the required fields. Dali, through the Constructor mode, it is necessary to fill in the field "Umova selection" and, even after entering the value, it is necessary to enter the selection. In this way, on the nutritional background, how to create a query with the Access parameter, the step is simple - enter the default parameters for the selection. To practice with the Constructor, it is necessary to be corrected by Maystrom Zapitiv. There, the primary data for filtering are created, as the basis of further work. We continue to make the situation easier. Even more important is the knowledge of information about how to create a drink in Access, as well as a table with data. Crossing the water already looked wider, like one of the options for working with Maystrom. However, in the "Constructor" mode, you can create such a request. For whom it is necessary to press the Constructor of requests - Perekhresny. The menu for adding weekend tables and the possibility of filling vibratory fields is being opened. One thing, on what should be respected, - points “group operation” and “cross table”. It is necessary to complete it correctly, otherwise the procedure will not be performed correctly. Cross-drinking is the easiest way to search and select information from a few data sheets, plus the possibility of forming diagrams and graphs. Ponad those, under the hour of victorious dana procedure, it is more obvious to look for, to navit from a kіlkom with variants of development. Obviously, there are “underwater stones”, which can stand on the back of a robot. For example, at the hour of the meeting, the system will see a pardon for sorting the data base for the values of the columns. So only sorting for standard items is more accessible - “growth and fall”. Podbivayuchi pіdbags, you need to say, scho virishiti, how to create a drink in Access - for the help of Maystra or the Designer, the koristuvach himself is to blame. If more people want to win MS Access DBMS, more pidide is the first option. Aje Meister himself will do the whole job, leaving only a few clicks of a mouse for the koristuvach when choosing brains. In order to win the expansion of the extension, it is clearly necessary to have access to work with data bases on the level of a professional. Like in the robotic tasks of great bases, it’s better to turn to fahivtsiv, so that the damage to the work of the DBMS and the possible losses of data can be saved. One moment, which is less accessible to programmers. Oskіlki my main DBMS is SQL, you can write the required power as a program code. To work in this mode, just click on the row of already created data, and select "SQL Mode" in the context menu. In the simplest way, it will ask for the implementation of a selection from one table of required fields, records, depending on the choice of minds, and a review of the results of the survey. Let's take a look at the selection in Access from the butt of the selection of information from the tables PRODUCTS of the data base of Delivery of goods. Head 1. Let it be necessary to select the low characteristics of the goods for yoga names. As a result of typing in the window of the query constructor (Fig. 4.1), the data query scheme will appear in the upper panel, which includes selections for the table query. Have one table PRODUCT. The table is represented by a translation of fields. The first row in the list of table fields, meanings with a z (*), indicates all the anonymous fields of the table. The bottom panel is a request form, which must be filled in. In addition, a new tab (Query Tools | Design) is automatically activated on the page (in Fig. 4.3 it is shown on the part of the tab), on which color the type of the created request is seen - Vibirka(Select). In this rank, for promotions, a request for a vote is always created. Commands on the tabs є іnstrumentarієm for vykonannya nebhіdnyh іy dіy svrennі zaprotu. This tab is opened, if in the designer mode a new input is created or an existing one is edited. RESPECT Task 2. Let them choose goods, the number of which is more than 1000 krb. The result is due to the name of the goods (NAІM_TOV), yoga cіnu (CІNA) and PDV (STAVKA_PDV). Manager 3. Let me choose invoices for the tasks period. The result is due to the number of the invoice (NOM_NAK), the warehouse code (KOD_SK), the date of vіdvantazhennya (DATA_VІDGR) and the final vartіst of the vіdvantazhennogo goods (SUMA_NAKL). To fix the marvelous video lesson:
MS Access can create databases, tables, forms and other names. This article will help you run SQL queries with MS Access. You can win and ask how to win in SQL to select data from the data base. This article is recognized for koristuvachіv, yakі just started to learn MS Access and want to learn SQL in MS Access. One of the minds, it is necessary before them as a rozpochat - tse access to the data base, which is victorious in the organization. Information about the article This side was looked over 4443 times. Chi bula tsia article brown? Access DBMS has two types of requests: QBE - request for an instant i SQL(Structured Query Language) - language of structured queries. The request is formed on the basis of a way to fill in a special form for the request at the "Constructor of Requests" window. SQL - requests are created by programmers from the SQL sequence - instructions. SQL is formed, as a rule, by programmers on the request form, which is entered by the command "Designer of requests" on the "Creation" tab, and then "SQL Mode" is selected from the View menu. Mova SQL assignments to work with data, tobto. for creation, modification and data management in relational databases. Specify that the number of SQL request modes (for ANSI-89 SQL and ANSI-92 SQL modes) conforms to ANSI-89 SQL and ANSI-92 SQL standards. Instructions to write a description of a set of data in mov SQL. SQL statements are composed of propositions (SELECT, FROM, WHERE, etc.). Propositions in mov SQL, terms are combined (operators, commands, identifiers, constants, etc.). The instruction is initiated by the operator (one of the commands SELECT, CREATE, INSERT, UPDATE, DELETE, etc.) and ends with a blob. Basic SQL statements: SELECT, FROM and WHERE. For example, the SQL statement: SELECT proposition revenge operator SELECT and identifier"Students.StudentCode". Here, outside the name of the "Student Code" field, it will display the name of the "Students" table of the data base. SELECT - selects a field to retrieve the required data. The FROM clause is composed of the FROM operator and the identifier "Students". FROM - designates a table to sweep fields assigned to the SELECT keyword. The next step is to specify that it is necessary to correct the syntax for shaping my SQL query. Irrespective of those that the syntax of the SQL movie is based on the syntax of the English movie, but for different DBMS the syntax of the SQL versions can be changed. Іsnuє kіlka types of requests: for vibrating, updating, adding and revising records, cross-request, creating that remote table, adding tables again. Let's widen the most - ask for a vibrate. Ask for a selection to select the necessary cortical information to be included in the tables. The stench is created less for po'yazanih tables. To have a look at SQL - ask for a selection in Access 2003 or 2007 DBMS; We take the SQL statement (SELECT) to select data from the Access 2003 database according to the student success criterion "Score = 5" (Fig. 2). Like the SELECT statement (Fig. 1), it shows the data to be collected in the SQL language: SELECT - sets the names of the fields, which are changed by the names of the tables, in which the data is to be stored; FROM - assigns tables and relationships through the key fields of the table (for which the INNER JOIN...ON construction is selected), based on which data is selected; WHREME - determines the choice of watering; ORDER BY - sets the sorting method by age (sorting by age is selected by default) the value of the "Priority" field in the "Students" table. As you see the instructions for selecting data from the database, SQL language determines what is necessary to take from the data base, the DBMS is entrusted to its user, the SQL language language does not have its own tools for managing the programs.
FROM (SELECT product_id, amount*price as in_sum, 0 as out_sum
from m_income
UNION ALL
SELECT product_id, 0 as in_sum, amount*price as out_sum
from m_outcome) AS t
GROUP BY product_id
HAVING SUM(in_sum)
FROM m_income a INNER JOIN m_income b ON a.id<= b.id
GROUP BY b.id, b.product_id, b.amount, b.price;
FROM m_outcome
GROUP BY product_id
ORDER BY sum(amount*price) DESC;
FROM
FROM m_outcome GROUP BY product_id) AS a
INNER JOIN
(SELECT product_id, sum(amount*price) AS summa,
summa*10000000+product_id AS id
FROM m_outcome GROUP BY product_id) AS b
ON a.id>=b.id
GROUP BY b.product_id, b.summa
HAVING COUNT(*)<=5
ORDER BY COUNT(*);
2*pi*(k-1)/N as x, COS(x) as COS_, SIN(x) as SIN_, TAN(x) as TAN_,
SQR(x) as SQRT_, x^3 as "x^3", ABS(x) as ABS_
FROM (SELECT COUNT(*) AS k
FROM m_income AS a INNER JOIN m_income AS b ON a.id<=b.id
GROUP BY b.id) t;DBMS Access
Mova zapitіv SQL
Classification of SQL Move Commands
Microsoft Access SQL wiki
Wiki of SQL Commands in Oracle
SQL wiki on the Internet
Asking for Microsoft SQL Server
Basic SQL commands for changing data
Insert command
Command for changing data
Commands for calling up procedures and functions
Organization of the integrity of data. Trigeri
Visnovok
Compilation of requests from Microsoft Access
Easy path for beginners
Simple zapit
Cross-request
Repeat entries
Entries without eligibility
Functions of requests in MS Access
Request for vibrating
Request from parameters
Cross-request extensions
Designing a drink for a choice with the minds of a choice
For the first time in the mode of tables, it is similar to the second for reviewing the tables of the database. Through the data of the table, the data of the base table, which underlie the request, can be changed. Request, which is looked at in table mode, on the view of tables in the Access 2010 database, cannot be Press to add(Click to Add), recognized by changing the structure of the tables. Which mode has a line on the tab Golovna(Home) buttons themselves are available, how and when to open database tables.Kroki
What do you need
SELECT Students.StudentID
FROM Students;
the propositions "SELECT Students.StudentCode" and the propositions "FROM Students".
Rice. one.
Rice. 2.
