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SQL Tutorial Archives - Testingpool

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Tagged: SQL Tutorial

Backup Table in SQL

SQL

Backup Table in SQL

Backup Table in SQL, as the name suggests, is the copy of an existing table whose backup we need to take . Constraints on the original table are not copied in the Backup table...

Order By Clause in SQL

SQL

Order By Clause in SQL

Order By Clause in SQL is used to sort the resultset in ascending or descending order. Key – Points : By default it sorts the result in Ascending order. Asc Keyword is used for...

Anonymous PLSQL block

SQL

Anonymous PL/SQL Block

Definition : The PL/SQL block that has no name is called Anonymous PL/SQL Block. Structure : Since the Anonymous Blocks have no names , therefore the header section is completely missing. They only consist...

Null Functions

SQL

Null Functions

Null Functions : Null Functions are used to handle Null values . Following different kinds of Null Functions are available in Oracle. 1. NVL Function : NVL stands for Null Value. This Function is...