Quelle long_unique_innodb_debug.result
Sprache: Lisp
#
# MDEV-37199 UNIQUE KEY USING HASH accepting duplicate records
#
## INSERT
create table t1 (
col1 int primary key,
col2 varchar(3000),
unique (col2) using hash) engine=innodb;
# Keep a Read View open to prevent purge
start transaction;
select * from t1;
col1 col2
connect con1,localhost,root;
# Create delete marked secondary index Record ('a', 10)
insert t1 values(10, 'a');
delete from t1;
# Insert secondary index key ('a', 15) in the GAP between ('a', 10) and Supremum set transaction isolation level read committed; set debug_sync="innodb_row_ins_step_enter SIGNAL checked_duplicate WAIT_FOR do_insert";
insert t1 values(15, 'a');
connect con2,localhost,root; set debug_sync="now WAIT_FOR checked_duplicate";
# Insert secondary index key ('a', 5) in the GAP between Infimum and ('a', 10) set transaction isolation level read committed;
insert t1 values(5, 'a'); set debug_sync="now SIGNAL do_insert";
connection con1; ERROR23000: Duplicate entry 'a' for key 'col2'
connection default;
select * from t1;
col1 col2
commit;
select * from t1;
col1 col2 5 a
disconnect con1;
disconnect con2; set debug_sync='RESET';
drop table t1;
## INSERT, row-level locking proof
create table t1 (
col1 int primary key,
col2 varchar(3000),
unique (col2) using hash) engine=innodb;
# Keep a Read View open to prevent purge
start transaction;
select * from t1;
col1 col2
connect con1,localhost,root;
# Create delete marked secondary index Record ('a', 10)
insert t1 values(10, 'a');
delete from t1;
# Insert secondary index key ('a', 15) in the GAP between ('a', 10) and Supremum set transaction isolation level read committed; set debug_sync="ha_write_row_end SIGNAL checked_duplicate WAIT_FOR do_insert";
insert t1 values(15, 'a');
connect con2,localhost,root; set debug_sync="now WAIT_FOR checked_duplicate";
# Insert secondary index key ('a', 5) in the GAP between Infimum and ('a', 10) set session innodb_lock_wait_timeout= 1; set transaction isolation level read committed;
insert t1 values(5, 'a'); ERROR HY000: Lock wait timeout exceeded; try restarting transaction set debug_sync="now SIGNAL do_insert";
connection con1;
connection default;
select * from t1;
col1 col2
commit;
select * from t1;
col1 col2 15 a
disconnect con1;
disconnect con2; set debug_sync='RESET';
drop table t1;
## UPDATE
create table t1 (
col1 int primary key,
col2 varchar(3000),
unique (col2) using hash) engine=innodb;
start transaction;
select * from t1;
col1 col2
connect con1,localhost,root;
insert into t1 values(10, 'a');
delete from t1;
insert into t1 values( 5, 'b');
insert into t1 values(15, 'c'); set transaction isolation level read committed; set debug_sync="innodb_row_update_for_mysql_begin SIGNAL checked_duplicate WAIT_FOR do_insert";
update t1 set col2='a' where col1=5;
connect con2,localhost,root; set debug_sync="now WAIT_FOR checked_duplicate"; set transaction isolation level read committed;
update t1 set col2='a' where col1=15; set debug_sync="now SIGNAL do_insert";
connection con1; ERROR23000: Duplicate entry 'a' for key 'col2'
connection default;
select * from t1;
col1 col2
commit;
select * from t1;
col1 col2 5 b 15 a
disconnect con1;
disconnect con2; set debug_sync='RESET';
drop table t1;
## INSERT IGNORE
create table t1 (
col1 int primary key,
col2 varchar(3000),
unique (col2) using hash) engine=innodb;
start transaction;
select * from t1;
col1 col2
connect con1,localhost,root;
insert t1 values(10, 'a');
delete from t1; set transaction isolation level read committed; set debug_sync="innodb_row_ins_step_enter SIGNAL checked_duplicate WAIT_FOR do_insert";
insert ignore t1 values(15, 'a'), (16, 'b');
connect con2,localhost,root; set debug_sync="now WAIT_FOR checked_duplicate"; set transaction isolation level read committed;
insert t1 values(5, 'a'); set debug_sync="now SIGNAL do_insert";
connection con1;
Warnings:
Warning 1062 Duplicate entry 'a' for key 'col2'
connection default;
select * from t1;
col1 col2
commit;
select * from t1;
col1 col2 5 a 16 b
disconnect con1;
disconnect con2; set debug_sync='RESET';
drop table t1;
## UPDATE IGNORE
create table t1 (
col1 int primary key,
col2 varchar(3000),
unique (col2) using hash) engine=innodb;
start transaction;
select * from t1;
col1 col2
connect con1,localhost,root;
insert into t1 values(10, 'a');
delete from t1;
insert into t1 values( 5, 'b');
insert into t1 values(15, 'c');
insert into t1 values( 9, 'd'); set transaction isolation level read committed; set debug_sync="innodb_row_update_for_mysql_begin SIGNAL checked_duplicate WAIT_FOR do_insert";
update ignore t1 set col2=chr(92+col1) where col1<=9;
connect con2,localhost,root; set debug_sync="now WAIT_FOR checked_duplicate"; set transaction isolation level read committed;
update t1 set col2='a' where col1=15; set debug_sync="now SIGNAL do_insert";
connection con1; ERROR42000: UPDATE IGNORE in READ COMMITTED isolation mode of a table with a UNIQUE constraint USING HASH is not currently supported
connection default;
select * from t1;
col1 col2
commit;
select * from t1;
col1 col2 5 b 9 d 15 a
disconnect con1;
disconnect con2; set debug_sync='RESET';
drop table t1;
## UPDATE modifying PK
create table t1 (
col1 int primary key,
col2 varchar(3000),
unique (col2) using hash) engine=innodb;
start transaction;
select * from t1;
col1 col2
connect con1,localhost,root;
insert into t1 values(10, 'a');
delete from t1;
insert into t1 values( 5, 'b');
insert into t1 values(15, 'c'); set transaction isolation level read committed; set debug_sync="innodb_row_update_for_mysql_begin SIGNAL checked_duplicate WAIT_FOR do_insert";
update t1 set col2='a', col1=4 where col1=5;
connect con2,localhost,root; set debug_sync="now WAIT_FOR checked_duplicate"; set transaction isolation level read committed;
update t1 set col2='a' where col1=15; set debug_sync="now SIGNAL do_insert";
connection con1; ERROR23000: Duplicate entry 'a' for key 'col2'
connection default;
select * from t1;
col1 col2
commit;
select * from t1;
col1 col2 5 b 15 a
disconnect con1;
disconnect con2; set debug_sync='RESET';
drop table t1;
## UPDATE IGNORE modifying PK
create table t1 (
col1 int primary key,
col2 varchar(3000),
unique (col2) using hash) engine=innodb;
start transaction;
select * from t1;
col1 col2
connect con1,localhost,root;
insert into t1 values(10, 'a');
delete from t1;
insert into t1 values( 5, 'b');
insert into t1 values(15, 'c');
insert into t1 values( 9, 'd'); set transaction isolation level read committed; set debug_sync="innodb_row_update_for_mysql_begin SIGNAL checked_duplicate WAIT_FOR do_insert";
update ignore t1 set col2=chr(92+col1), col1=col1-1 where col1<=9;
connect con2,localhost,root; set debug_sync="now WAIT_FOR checked_duplicate"; set transaction isolation level read committed;
update t1 set col2='a' where col1=15; set debug_sync="now SIGNAL do_insert";
connection con1; ERROR42000: UPDATE IGNORE in READ COMMITTED isolation mode of a table with a UNIQUE constraint USING HASH is not currently supported
connection default;
select * from t1;
col1 col2
commit;
select * from t1;
col1 col2 5 b 9 d 15 a
disconnect con1;
disconnect con2; set debug_sync='RESET';
drop table t1;
# End of 10.6 tests
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-08)
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