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b378ddb3d3
The problem was that a PREARE followed by a non prepared statement using DEFAULT NEXT_VALUE() could change table->next_local to point to a not persitent memory aria. The next EXECUTE would then try to use the wrong pointer, which could cause a crash. Fixed by reseting the pointer to it's old value when doing EXECUTE.
138 lines
3.1 KiB
Plaintext
138 lines
3.1 KiB
Plaintext
#
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# Testing sequence in DEFAULT clause
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#
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--source include/have_sequence.inc
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drop table if exists t1,s1,s2;
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drop view if exists v1;
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--echo #
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--echo # Test DEFAULT
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--echo #
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CREATE SEQUENCE s1 nocache engine=myisam;
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CREATE table t1 (a int default next value for s1, b int);
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show create table t1;
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insert into t1 SET b=1;
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insert into t1 SET b=2;
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insert into t1 (b) values (3),(4);
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select * from t1;
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update t1 set b=5 where a=1;
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delete from t1 where b=1;
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select * from t1;
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--echo #
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--echo # Executing DEFAULT function
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--echo #
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INSERT into t1 values(default(a),10);
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INSERT into t1 values(default(a),default(a));
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update t1 set a=default(a), b=12 where b=2;
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select * from t1;
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select default(a), a, b from t1;
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select * from s1;
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select * from t1 where default(a) > 0;
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select * from s1;
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--echo #
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--echo # View
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--echo #
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create view v1 as select * from t1;
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insert into v1 set b=20;
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select * from v1;
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drop view v1;
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--echo #
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--echo # Alter table
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--echo #
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CREATE SEQUENCE s2 nocache engine=myisam;
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alter table t1 add column c int default next value for s2, add column d int default previous value for s2;
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show create table t1;
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select * from t1;
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drop sequence s2;
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show create table t1;
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drop table t1;
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drop sequence s1;
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--echo #
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--echo # LOCK TABLES
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--echo #
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CREATE SEQUENCE s1 nocache engine=myisam;
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CREATE table t1 (a int default next value for s1, b int);
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insert into t1 (b) values (3),(4);
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LOCK TABLE t1 WRITE;
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--error ER_TABLE_NOT_LOCKED
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insert into t1 (b) values (5),(6);
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UNLOCK TABLES;
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LOCK TABLE t1 WRITE, s1 WRITE;
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insert into t1 (b) values (5),(6);
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select default(a) from t1;
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UNLOCK TABLES;
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LOCK TABLE t1 READ;
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--error ER_TABLE_NOT_LOCKED
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insert into t1 (b) values (5),(6);
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--error ER_TABLE_NOT_LOCKED
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select default(a) from t1;
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UNLOCK TABLES;
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LOCK TABLE t1 READ, s1 read;
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--error ER_TABLE_NOT_LOCKED_FOR_WRITE
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insert into t1 (b) values (5),(6);
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--error ER_TABLE_NOT_LOCKED_FOR_WRITE
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select default(a) from t1;
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UNLOCK TABLES;
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drop table t1;
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drop sequence s1;
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--echo #
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--echo # Testing prepared statements
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--echo #
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CREATE or replace SEQUENCE s1 nocache engine=myisam;
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CREATE or replace table t1 (a int default next value for s1, b int);
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PREPARE stmt FROM "insert into t1 (b) values(?)";
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execute stmt using 1;
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execute stmt using 2;
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execute stmt using 3;
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select * from t1;
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drop table t1,s1;
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deallocate prepare stmt;
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--echo #
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--echo # Wrong usage of default
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--echo #
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--error ER_NO_SUCH_TABLE
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CREATE table t1 (a int default next value for s1, b int);
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CREATE SEQUENCE s1 nocache engine=myisam;
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CREATE table t1 (a int default next value for s1, b int);
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DROP SEQUENCE s1;
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--error ER_NO_SUCH_TABLE
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insert into t1 (b) values (5),(6);
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--error ER_NO_SUCH_TABLE
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ALTER TABLE t1 add column c int;
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CREATE SEQUENCE s1 nocache engine=myisam;
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ALTER TABLE t1 add column c int;
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--error ER_NO_SUCH_TABLE
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ALTER TABLE t1 add column d int default next value for s_not_exits;
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drop table t1;
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drop sequence s1;
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--echo #
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--echo # MDEV 22785 Crash with prepared statements and NEXTVAL()
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--echo #
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CREATE SEQUENCE s;
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CREATE TABLE t1 (id int NOT NULL DEFAULT NEXTVAL(s), PRIMARY KEY (id));
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PREPARE stmt FROM " INSERT INTO t1 () values ()";
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INSERT INTO t1 () values ();
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EXECUTE stmt;
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# Cleanup
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DROP TABLE t1;
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DROP SEQUENCE s;
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