Deferrerable Check constraints - Mailing list pgsql-novice

From Luiz K. Matsumura
Subject Deferrerable Check constraints
Date
Msg-id 492AAEC2.5030609@planit.com.br
Whole thread Raw
Responses Re: Deferrerable Check constraints  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: Deferrerable Check constraints  (Bruce Hyatt <brucejhyatt@yahoo.com>)
List pgsql-novice
Hi All,

Need a Help. Can a check constraint be deferred until the end of a
transaction  ?
In other words, if i have a constraint like this:

CREATE TABLE test
(
  id serial NOT NULL,
  qt1 integer NOT NULL DEFAULT 0,
  qt2 integer NOT NULL DEFAULT 0,
  CONSTRAINT check_qt CHECK (qt1 <= qt2)
)

There are some manner that allow qt1 to be greater than qt2 on a
intermediate state of the transaction ?

Thanks in Advance

--
Luiz K. Matsumura
Plan IT Tecnologia Informática Ltda.


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