I am using "PostgreSQL 8.2.4 on i686-pc-mingw32,
compiled by GCC gcc.exe (GCC) 3.4.2 (mingw-special)" on Windows 2003
server
While I am trying to update a prmary key It is failing with
the following message “ERROR: duplicate key violates unique
constraint "master_pkey" “
Can anybody explain why this happens so? Sending the
script that I tried.
CREATE TABLE master ( m1 INT primary key , m2 VARCHAR(100))
;
INSERT INTO master VALUES ( 1, 'm1' ) ;
INSERT INTO master VALUES ( 2, 'm2' ) ;
UPDATE master SET m1 = m1 + 1;
Update fails with the message - ERROR: duplicate key violates
unique constraint "master_pkey"
If I insert data in the reverse order it is making no
problem. Is this a Bug ?
I tried ,
TRUNCATE TABLE master;
INSERT INTO master VALUES ( 3, 'm3' ) ;
INSERT INTO master VALUES ( 2, 'm2' ) ;
UPDATE master SET m1 = m1 + 1;
It works perfectly.
Anoo
S
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