Wednesday, 27 March 2013

Find all (and/or system named) default constraint from a given database

USE [DatabaseName]
GO

--
-- find all system named default constraint
select
  t.name TABLE_NAME
  , c.name COLUMN_NAME
  , d.name CONSTRAINT_NAME
  , cm.text DEFAULT_VALUE
  , 'ALTER TABLE [dbo].['+t.name +'] DROP CONSTRAINT [' +d.name +']' AS DROP_STATEMENT
  , 'ALTER TABLE [dbo].['+t.name+'] ADD  CONSTRAINT ['+d.name+']  DEFAULT '+cm.text+' FOR ['+c.name+']' as CREATE_STATEMENT
  , 'ECHO ALTER TABLE [dbo].['+t.name+'] ADD  CONSTRAINT ['+d.name+']  DEFAULT '+cm.text+' FOR ['+c.name+'] > ' +  d.name+'.defconst.sql' as CREATE_BATCH_COMMAND
 from sys.default_constraints d
  inner join sys.tables t
   on t.object_id = d.parent_object_id
   inner join sys.columns c
   on c.object_id = t.object_id and c.column_id = d.parent_column_id
   inner join sys.syscomments cm
  on cm.id=d.object_id
 where d.is_system_named=1 and t.is_ms_shipped=0
 order by 1,2




GO

 SELECT 
 b.name AS TABLE_NAME,
 d.name AS COLUMN_NAME,
 a.name AS CONSTRAINT_NAME,
 c.text AS DEFAULT_VALUE
 ,a.*
 FROM sys.sysobjects a
   INNER JOIN
    (SELECT name, id
     FROM sys.sysobjects
     WHERE xtype = 'U') b
   ON (a.parent_obj = b.id)
   INNER JOIN sys.syscomments c
   ON (a.id = c.id)
            INNER JOIN sys.syscolumns d ON (d.cdefault = a.id)                                         
  WHERE a.xtype = 'D'       
  ORDER BY b.name, a.name

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