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« W3Schools Home Next Chapter » SQL SQL is a standard language for accessing databases. Our SQL tutorial will teach you how to use SQL to access and manipulate data in: MySQL, SQL Server, Access, Oracle, Sybase, DB2, and other database systems....
Use SQL functions like MIN, MAX, and COUNT. Understand subqueries and indexes. Manage user permissions and data security.If you are not a company or school, you can still buy the course for personal use. Read more about W3Schools courses here: W3Schools CoursesCertified...
Note:This is an optional feature. You can study at W3Schools without creating an account. SQL References At W3Schools you will find a complete reference for keywords and functions: SQL Keyword Reference MYSQL Functions SQLServer Functions
SQL Functions ISNULL(val, replacementVal) NULLIF(val1, val2) GROUP BY HAVING Other SQL Functions RAND() FlexScript Expressions: you can use any FlexScript expression within an SQL expression. In some cases, however, you may need to escape the expression using curly braces. This is often re...
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This can be accomplished by using the DB Tools Execute Query VI which can be found in the Functions»Database»Advanced palettes of the Functions Pallette. This VI will allow the user to execute any SQL statement including the delete and update statements. Additional InformationThe Database ...
Any operation performed with NULL results in NULL. Different databases have different functions to handle null. There is a common function that is used in MySQL, Microsoft SQL Server, and Oracle to treat NULLs. SELECT ename, sal+COALESCE(comm,0) FROM employee; Output: ENAME SAL+COALESCE(COMM...
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Obviously if the stored procedure language is C#, Java, or R, you’re going to use the functions and syntax of those procedural languages. In other words, despite the fact that the motivation for SQL was to use standardized declarative queries, in the real world you see lots of database-...