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SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems.
BEGIN--do what needs to be done if exists END ELSE BEGIN--do what needs to be done if not END: GROUP BY: SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY column_name: HAVING: SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY ...
10 sty 2012 · This is for MS SQL: DECLARE @datestring varchar(7) = '01/2012'; DECLARE @dateStart varchar(10) = CONVERT(varchar(10), '01/' + @datestring, 101); DECLARE @dateEnd varchar(10) = CONVERT(varchar(10), DATEADD(DAY, -1, DATEADD(MONTH, 1, @dateStart)), 101); SELECT * FROM [StackTestDB].[dbo].[DateTable] WHERE [DateCol] >= @dateStart AND [DateCol ...
3 wrz 2024 · BEGIN TRANSACTION Command. It indicates the start point of an explicit or local transaction. Syntax: BEGIN TRANSACTION transaction_name ;
In this tutorial, we will use semicolon at the end of each SQL statement. Some of The Most Important SQL Commands. SELECT - extracts data from a database. UPDATE - updates data in a database. DELETE - deletes data from a database. INSERT INTO - inserts new data into a database. CREATE DATABASE - creates a new database.
12 wrz 2022 · Learn how to build conditional logic when writing SQL code using IF, BEGIN, END, ELSE, and ELSEIF logic.
The BEGIN ... END syntax is used to create a compound statement. These compound statements contain a multiple set of statements. These statement starts with BEGIN and ends with END statements. Each statement in a compound statement ends with a semi colon (;) or the current statement delimiter.
