December 2002
Intermediate to advanced
928 pages
85h 29m
English
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Name
SET CONSTRAINT
Synopsis
SET {CONSTRAINT | CONSTRAINTS} {ALL | constraint_name[,constraint_name...]}
{IMMEDIATE | DEFERRED}Specifies at the transaction level whether specific constraints are checked after each DML statement or are deferred until the end of a transaction. This statement applies only to deferrable constraints. The success of deferrable constraints can be tested by issuing the statement SET CONSTRAINTS ALL IMMEDIATE before the COMMIT statement is issued.
Keywords
- ALL
Specifies that all deferrable constraints for the transaction are affected by this statement.
- constraint_name
Name of a deferrable constraint.
- IMMEDIATE
Specifies that the conditions enforced by the constraints be checked after each DML statement is completed.
- DEFERRED
Specifies that the conditions enforced by the constraints be checked after the entire transaction is complete and committed.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.