I tried to add up records 2 different ways:
1. using command [copy messageinfo (user_id, receivedtime, filename, sendersstring, subject,
hasattachments, groupmsg, msgsize, version ) FROM '/meridtemp/messageinfo.dat';] from psql
2. using simple INSERT INTO messageinfo ( user_id ) VALUES( 1728::int8 );
In 2nd case it worked but not in 1st one. Why?
Later I did an experiment & repeated it few times. After copy command is running for a while from
within psql and trying to insert 60,000 records I interrupted it by pressing CTRL+C few times.
Each time I had different line within addmsgcountSync where it stopped. It tells me that �copy�
command does not freeze on one particular statement but it did not insert a single record.
For this table messageinfo I have trigger:
CREATE TRIGGER msgInjector AFTER INSERT ON messageinfo FOR EACH ROW EXECUTE PROCEDURE addmsgcountSync();
CREATE OR REPLACE FUNCTION addmsgcountSync() RETURNS TRIGGER AS
'
DECLARE currentTime injector.lastreceivedtime%TYPE;vlastreceivedtime injector.lastreceivedtime%TYPE;userIdRec
RECORD;vIDmessageinfo.user_id%TYPE;injectorCursor CURSOR ( tt int8 ) FOR SELECT lastreceivedtime FROM injector WHERE
injector.id=
tt::int8 ;
BEGINvID = NEW.user_id;IF ( vID IS NOT NULL ) THEN -- Find out lastrecievedtime we need cursor OPEN
injectorCursor(vID ); FETCH injectorCursor INTO userIdRec; vlastreceivedtime = userIdRec.lastreceivedtime;
CLOSEinjectorCursor; currentTime = CURRENT_TIMESTAMP; IF vlastreceivedtime < currentTime THEN
vlastreceivedtime= currentTime; END IF; -- To make sure time of last message is not newer than lastreceivedtime
time IF vlastreceivedtime < NEW.receivedtime THEN vlastreceivedtime = NEW.receivedtime; END IF; --
Stopescopy command but not insert one ? UPDATE injector SET addmsgcount = addmsgcount + 1, lastreceivedtime =
vlastreceivedtimeWHERE
injector.id = vID::int8;END IF;RETURN NULL;
END;
' LANGUAGE 'plpgsql';
=====
Thanks a lot
Igor Artimenko
I specialize in
Java, J2EE, Unix, Linux, HP, AIX, Solaris, Progress, Oracle, DB2, Postgres, Data Modeling
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