Can insert DUPLICATE keys in UNIQUE index when using RECORD_VERSION
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Key: CORE-3610
URL: http://tracker.firebirdsql.org/browse/CORE-3610
Project: Firebird Core
Issue Type: Bug
Reporter: Pavel Zotov
Priority: Critical
Server version:
WI-V2.5.1.26353 Firebird 2.5
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SQL> create database "testz.fdb" pagesize 2048;
SQL> commit;
SQL> connect testz.fdb;
Database: testz.fdb
---------------------------------------
-- SESSION #1:
recreate table t(id int not null, f01 int, constraint t_pk primary key(id),
constraint t_unq unique(f01));
commit;
insert into t values(1, 1 );
insert into t values(2,null);
insert into t values(3,null);
commit;
update t set f01=null where id=1; -- <<<<<<<<<<<<< SET UNIQUE FIELD TO NULL
<<<<<<<
-- SESSION #2:
commit; set transaction read committed record_version no wait; update t set
f01=1 where id=3;
-- SESSION #1:
ROLLBACK;
-- SESSION #2:
COMMIT; -- PASSED! NO MESSAGES ABOUT VIOLATION OF UNIQUE INDEX!
-- SESSION #1:
SQL> select * from t;
ID F01
============ ============
1 1
2 <null>
3 1
-- SESSION #2:
SQL> select * from t;
ID F01
============ ============
1 1
2 <null>
3 1
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