Delete constraints - SQL Server 2005

  • Comments posted to this topic are about the item Delete constraints - SQL Server 2005

  • Thank you. This saved me the trouble of writing something like it.

    Incidentally, it does not get rid of defaults if you consider those constraints.

    ---
    Timothy A Wiseman
    SQL Blog: http://timothyawiseman.wordpress.com/

  • Try this:

    USE MyDB

    DECLARE @sSql NVARCHAR(4000) SET @sSql = ''

    DECLARE @sTypeDesc sysname SET @sTypeDesc = ''

    DECLARE @sTableName sysname SET @sTableName = ''

    DECLARE @sConstraintName sysname SET @sConstraintName = ''

    DECLARE cur CURSOR DYNAMIC FOR

    SELECT name,

    type_desc,

    OBJECT_NAME(parent_object_id)

    FROM sys.objects

    WHERE is_ms_shipped = 0

    AND type_desc LIKE '%_CONSTRAINT'

    ORDER BY type_desc, name

    WHILE 1 = 1

    BEGIN

    OPEN cur

    FETCH FIRST FROM cur INTO @sConstraintName, @sTypeDesc, @sTableName

    IF @@FETCH_STATUS != 0

    BEGIN

    CLOSE cur

    BREAK

    END

    WHILE @@FETCH_STATUS = 0

    BEGIN

    BEGIN TRY

    SET @sSql = 'ALTER TABLE ' + QUOTENAME(@sTableName) + ' DROP CONSTRAINT ' + QUOTENAME(@sConstraintName)

    RAISERROR('%s', 10, 1, @sSql) WITH NOWAIT

    EXEC sp_executesql @sSql

    END TRY

    BEGIN CATCH

    DECLARE @ENumber INT SET @ENumber = ISNULL(ERROR_NUMBER(), -1)

    DECLARE @ESeverity INT SET @ESeverity = ISNULL(ERROR_SEVERITY(), -1)

    DECLARE @estate INT SET @estate = ISNULL(ERROR_STATE(), 0) IF @estate = 0 SET @estate = 42

    DECLARE @EProcedure NVARCHAR(126) SET @EProcedure = ISNULL(ERROR_PROCEDURE(), N'{N/A}')

    DECLARE @ELine INT SET @ELine = ISNULL(ERROR_LINE(), -1)

    DECLARE @EMessageRecv NVARCHAR(2048) SET @EMessageRecv = ISNULL(ERROR_MESSAGE(), N'')

    DECLARE @EMessageSent NVARCHAR(440) SET @EMessageSent = N''

    IF ERROR_PROCEDURE() IS NOT NULL SET @EMessageSent = N'Error %d, Level %d, State %d, Procedure %s, Line %d, Message: '

    SET @EMessageSent = @EMessageSent + ERROR_MESSAGE()

    RAISERROR(@EMessageSent, 10 /* @ESeverity */ , @estate, @ENumber, @ESeverity, @estate, @EProcedure, @ELine) WITH LOG

    END CATCH

    FETCH FIRST FROM cur INTO @sConstraintName, @sTypeDesc, @sTableName

    END

    CLOSE cur

    END

    DEALLOCATE cur

    GO

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