How do I find a default constraint using INFORMATION_SCHEMA?

Question

I\'m trying to test if a given default constraint exists. I don\'t want to use the sysobjects table, but the more standard INFORMATION_SCHEMA.

I\'ve used this to che

Answer 1

How about using a combination of CHECK_CONSTRAINTS and CONSTRAINT_COLUMN_USAGE:

    select columns.table_name,columns.column_name,columns.column_default,checks.constraint_name
          from information_schema.columns columns
             inner join information_schema.constraint_column_usage usage on 
                  columns.column_name = usage.column_name and columns.table_name = usage.table_name
             inner join information_schema.check_constraints checks on usage.constraint_name = checks.constraint_name
    where columns.column_default is not null