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C:/xampp/mysql/mysql-test/suite/ndb/t/_[ Writable ]

File:C:/xampp/mysql/mysql-test/suite/ndb/t/ndb_update_no_read.test

-- source include/have_ndb.inc
-- source include/not_embedded.inc

--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

#
# New test case for WL 3686 (which is not until CGE-6.3)
# but test is committed in 5.1 to verify consistant results.
#
# When only constant expressions in update statements and
# only PK or UK in WHERE clause. No extra WHERE parts are
# allowed. WL #3687 takes of more advanced variants of
# avoiding the read before the update/delete

create table t1 (a int not null primary key, b int not null, c int,
                 unique index_b (b) using hash)
engine ndb;

insert into t1 values (1,10,1),(2,9,1),(3,8,1),(4,7,1),(5,6,1),(6,5,2),(7,4,2),(8,3,2),
            (9,2,2),(10,1,2);

# These ones should use optimisation

update t1 set c = 111, b = 20 where a = 1;

select * from t1 where a = 1 order by a;

delete from t1 where a = 1;

select * from t1 where a = 1 order by a;

update t1 set c = 12, b = 19 where b = 2;

select * from t1 where b = 2 order by a;

delete from t1 where b = 19;

select * from t1 where b = 19 order by a;

update t1 set c = 22 where a = 10 or a >= 10;

select * from t1 order by a;

update t1 set c = 23 where a in (8,10);

select * from t1 order by a;

update t1 set c = 23 where a in (7,8) or a >= 10;

select * from t1 order by a;

# These ones should not use optimisation

update t1 set c = 11 where a = 3 or b = 7;

select * from t1 where a = 3 or b = 7 order by a;

update t1 set a = 13, b = 20 where a = 3;

select * from t1 where a = 13 order by a;

update t1 set a = 12, b = 19 where b = 7;

select * from t1 where b = 19 order by a;

select * from t1 where b = 7 order by a;

update t1 set c = 12, b = 29 where a = 5 and b = 6;

select * from t1 where b = 19 order by a;

delete from t1 where b = 6 and c = 12;

select * from t1 where b = 6 order by a;

drop table t1;

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Regist : 09-12-2024	Expired : 01-12-2027