15.10 - Example: Attempting to Add and Drop Constraints in the Same Statement - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

prodname
Teradata Database
vrm_release
15.10
created_date
December 2015
category
Programming Reference
featnum
B035-1144-151K

The following request is not valid because you can add or drop only one constraint per ALTER TABLE request:

    ALTER TABLE table_1
      DROP CONSTRAINT check_1,
      ADD CONSTRAINT check_2 CHECK (column_2 > 0);

The system returns the following message:

     Only a check specification is allowed for the modification.