I am using SQL server 2008. I need to find if default value constraint does not exist then create it. Here is what I have tried.
IF (NOT EXISTS(SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS WHERE CONSTRAINT_NAME ='MyConstraint')) BEGIN ALTER TABLE [XX] ADD CONSTRAINT [MyConstraint] DEFAULT ((-1)) FOR [XXXX] END GO
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Answer
if not exists ( select * from sys.all_columns c join sys.tables t on t.object_id = c.object_id join sys.schemas s on s.schema_id = t.schema_id join sys.default_constraints d on c.default_object_id = d.object_id where t.name = 'table' and c.name = 'column' and s.name = 'schema') ....