SYSCAT.COLCHECKS catalog view
Each row represents a column that is referenced by a check constraint or by the definition of a materialized query table. For table hierarchies, each check constraint is recorded only at the level of the hierarchy where the constraint was created.
|Column Name||Data Type||Nullable||Description|
|CONSTNAME||VARCHAR (128)||Name of the check constraint.|
|TABSCHEMA||VARCHAR (128)||Schema name of the table containing the referenced column.|
|TABNAME||VARCHAR (128)||Unqualified name of the table containing the referenced column.|
|COLNAME||VARCHAR (128)||Name of the column.|