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DDLNo315

Suppress error upon DROP of a nonexistent constraint.

Synopsis

[SQL]    DDLNo315=n

n is either 1 or 0. The default value is 0.

Description

When DDLNo315 is enabled (n = 1), when an attempt is made to DROP a nonexistent constraint, InterSystems IRIS® data platform suppresses the SQLCODE -315 error.

For further details, refer to the ALTER TABLE command.

Changing This Parameter

On the SQL page of the Management Portal (System Administration > Configuration > SQL and Object Settings > SQL), select Ignore redundant DDL statements to suppress redundant SQLCODE errors.

To set the desired value for DDLNo315 from the InterSystems Terminal, use the SetDDLNo315() method of the %SYSTEM.SQL class. See the class reference for details.

You can also change DDLNo315 with the Config.SQL class (as described in the class reference) or by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).