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SQL : LOCAL TEMPORARY TABLES

Tutorial by:LUBY      Date: 2016-04-14 23:50:52

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This SQL tutorial explains how to create SQL LOCAL TEMPORARY tables with syntax and examples.

Description

SQL LOCAL TEMPORARY TABLES are distinct within modules and embedded SQL programs within SQL sessions.

Syntax

The syntax for SQL DECLARE LOCAL TEMPORARY TABLE is:

DECLARE LOCAL TEMPORARY TABLE table_name
( column1 datatype [ NULL | NOT NULL ],
  column2 datatype [ NULL | NOT NULL ],
  ...
);

Parameters or Arguments

table_name
The name of the local temporary table that you wish to create.
column1, column2
The columns that you wish to create in the local temporary table. Each column must have a datatype. The column should either be defined as NULL or NOT NULL and if this value is left blank, the database assumes NULL as the default.

Example

Let's look at a SQL DECLARE LOCAL TEMPORARY TABLE example:

DECLARE LOCAL TEMPORARY TABLE suppliers_temp
( supplier_id int NOT NULL,
  supplier_name char(50) NOT NULL,
  contact_name char(50)
);

This example would create a LOCAL TEMPORARY TABLE called suppliers_temp.

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