SQL Server : Check If Index Exists On Schema

–create function:

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE FUNCTION [dbo].[IndexExistsOnSchema]
(
      @SCHEMA VARCHAR(50),
      @INDEX  VARCHAR(255)
)
RETURNS INT
AS
BEGIN
      DECLARE @CNT INT
      SET @CNT = 0
      SELECT @CNT = COUNT(*)
      FROM SYS.INDEXES
      WHERE OBJECT_ID = OBJECT_ID(@SCHEMA)
      AND name = @INDEX
      RETURN @CNT
END 
GO
–use function:


IF (SELECT DBO.INDEXEXISTSONSCHEMA(@SCHEMA_NAME, @INDEX_NAME)) > 0
EXEC(‘ALTER INDEX [INDEX_NAME] ON ‘ + @SCHEMA_NAME + ‘ DISABLE’);
–or
IF (SELECT DBO.INDEXEXISTSONSCHEMA(@SCHEMA_NAME,@INDEX_NAME)) > 0
EXEC(‘ALTER INDEX [INDEX_NAME] ON ‘ + @SCHEMA_NAME+ ‘ REBUILD’);