><strong>ALTER TABLE MyTableName</strong> ; >ALTER COLUMN PROPID I NULL ; >ALTER COLUMN SITEID I NULL ; >ALTER COLUMN SITEID2 I NULL ; >ALTER COLUMN ASSRID I NULL ; >ALTER COLUMN TRANID I NULL ; >ALTER COLUMN MISCID I NULL ; >ALTER COLUMN CREDID I NULL ; >ALTER COLUMN COMPLEVL C (1) NULL ; >ALTER COLUMN COMPLEVL DROP CHECK ; >ALTER COLUMN SOURCE C (1) NULL ; >ALTER COLUMN SOURCE DROP CHECK ; >ALTER COLUMN PREFCODE C (1) NULL ; >ALTER COLUMN SITESRCE C (1) NULL ; >ALTER COLUMN CCODE C (2) NULL ; >ALTER COLUMN TOWN C (4) NULL >>