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| Programming in MS SQL Server 2012 |
NULL Parameter DataThe following example describes CREATE PROCEDURE with NULL parameter value. It is optional to pass parameter data value while execute this stored procedure. By default, this stored procedure returns ALL Tables Information of EBusiness Database. Based on input parameter data value, this stored procedure returns particular Table Information. The following Transact-SQL statements are used to retrieve all or particular table(s) information based on NULL or given input parameter data value. --
Example 108 -- USE EBusiness GO IF EXISTS (SELECT *
FROM
sysobjects
WHERE
name = N'dbo.usp_TableInformation' AND
type = 'P')
DROP
PROCEDURE dbo.usp_TableInformation GO CREATE PROCEDURE dbo.usp_TableInformation @TableName varchar(255) = NULL AS IF @TableName IS NULL
SELECT * FROM INFORMATION_SCHEMA.TABLES ELSE
SELECT * FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = @TableName |
* * * * *
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