---- establish connection con1 (root) ----
---- switch to connection default ----
set @initial_query_cache_size = @@global.query_cache_size;
set @@global.query_cache_size=102400;
flush status;
drop table if exists t1;
create table t1(c1 int);
insert into t1 values(1),(10),(100);
prepare stmt1 from "select * from t1 where c1=10";
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	0
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	0
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	1
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	2
prepare stmt2 from "select * from t1 where c1=10";
execute stmt2;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	3
execute stmt2;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	4
execute stmt2;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	5
---- switch to connection con1 ----
prepare stmt3 from "select * from t1 where c1=10";
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	6
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	7
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	8
---- switch to connection default ----
prepare stmt10 from "SELECT * FROM t1 WHERE c1 = 100";
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	8
execute stmt10;
c1
100
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	8
execute stmt10;
c1
100
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	9
SELECT * FROM t1 WHERE c1 = 100;
c1
100
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	9
---- switch to connection con1 ----
SELECT * FROM t1 WHERE c1 = 100;
c1
100
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	10
---- switch to connection default ----
prepare stmt11 from "SELECT * FROM t1 WHERE c1 = 1";
---- switch to connection con1 ----
prepare stmt12 from "SELECT * FROM t1 WHERE c1 = 1";
---- switch to connection default ----
SELECT * FROM t1 WHERE c1 = 1;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	10
SELECT * FROM t1 WHERE c1 = 1;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	11
execute stmt11;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	11
---- switch to connection con1 ----
execute stmt12;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	12
---- switch to connection default ----
prepare stmt1 from "select * from t1 where c1=?";
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	12
set @a=1;
execute stmt1 using @a;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	12
execute stmt1 using @a;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	13
---- switch to connection con1 ----
set @a=1;
prepare stmt4 from "select * from t1 where c1=?";
execute stmt4 using @a;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
prepare stmt4 from "select @a from t1 where c1=?";
execute stmt4 using @a;
@a
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
execute stmt4 using @a;
@a
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
---- switch to connection default ----
prepare stmt1 from "select * from t1 where c1=10";
set global query_cache_size=0;
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
---- switch to connection con1 ----
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
---- switch to connection default ----
set global query_cache_size=102400;
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	14
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	15
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	16
---- switch to connection con1 ----
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	17
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	18
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
---- switch to connection default ----
set global query_cache_size=0;
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
---- switch to connection con1 ----
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
---- switch to connection default ----
set global query_cache_size=0;
prepare stmt1 from "select * from t1 where c1=10";
---- switch to connection con1 ----
prepare stmt3 from "select * from t1 where c1=10";
---- switch to connection default ----
set global query_cache_size=102400;
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt1;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
---- switch to connection con1 ----
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
execute stmt3;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
---- switch to connection default ----
set global query_cache_size=0;
prepare stmt1 from "select * from t1 where c1=?";
set global query_cache_size=102400;
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
set @a=1;
execute stmt1 using @a;
c1
1
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
set @a=100;
execute stmt1 using @a;
c1
100
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
set @a=10;
execute stmt1 using @a;
c1
10
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	19
drop table t1;
---- disconnect connection con1 ----
########################################################################
#
# BUG#25843: Changing default database between PREPARE and EXECUTE of
# statement breaks binlog.
#
########################################################################

#
# Check that default database and its attributes are fixed at the
# creation time.
#

DROP DATABASE IF EXISTS mysqltest1;
DROP DATABASE IF EXISTS mysqltest2;

CREATE DATABASE mysqltest1 COLLATE utf8_unicode_ci;
CREATE DATABASE mysqltest2 COLLATE utf8_general_ci;

CREATE TABLE mysqltest1.t1(msg VARCHAR(255));
CREATE TABLE mysqltest2.t1(msg VARCHAR(255));

use mysqltest1;
PREPARE stmt_a_1 FROM 'INSERT INTO t1 VALUES(DATABASE())';
PREPARE stmt_a_2 FROM 'INSERT INTO t1 VALUES(@@collation_database)';

EXECUTE stmt_a_1;
EXECUTE stmt_a_2;

use mysqltest2;
EXECUTE stmt_a_1;
EXECUTE stmt_a_2;

SELECT * FROM mysqltest1.t1;
msg
mysqltest1
utf8_unicode_ci
mysqltest1
utf8_unicode_ci

SELECT * FROM mysqltest2.t1;
msg

DROP PREPARE stmt_a_1;
DROP PREPARE stmt_a_2;

#
# The Query Cache test case.
#

DELETE FROM mysqltest1.t1;
DELETE FROM mysqltest2.t1;

INSERT INTO mysqltest1.t1 VALUES('mysqltest1.t1');
INSERT INTO mysqltest2.t1 VALUES('mysqltest2.t1');

use mysqltest1;
PREPARE stmt_b_1 FROM 'SELECT * FROM t1';

use mysqltest2;
PREPARE stmt_b_2 FROM 'SELECT * FROM t1';

EXECUTE stmt_b_1;
msg
mysqltest1.t1

EXECUTE stmt_b_2;
msg
mysqltest2.t1

use mysqltest1;

EXECUTE stmt_b_1;
msg
mysqltest1.t1

EXECUTE stmt_b_2;
msg
mysqltest2.t1

DROP PREPARE stmt_b_1;
DROP PREPARE stmt_b_2;

use test;

DROP DATABASE mysqltest1;
DROP DATABASE mysqltest2;

#
# Check that prepared statements work properly when there is no current
# database.
#

CREATE DATABASE mysqltest1 COLLATE utf8_unicode_ci;
CREATE DATABASE mysqltest2 COLLATE utf8_general_ci;

use mysqltest1;

PREPARE stmt_c_1 FROM 'SELECT DATABASE(), @@collation_database';

use mysqltest2;

PREPARE stmt_c_2 FROM 'SELECT DATABASE(), @@collation_database';

DROP DATABASE mysqltest2;

SELECT DATABASE(), @@collation_database;
DATABASE()	@@collation_database
NULL	latin1_swedish_ci

EXECUTE stmt_c_1;
DATABASE()	@@collation_database
mysqltest1	utf8_unicode_ci

SELECT DATABASE(), @@collation_database;
DATABASE()	@@collation_database
NULL	latin1_swedish_ci

EXECUTE stmt_c_2;
DATABASE()	@@collation_database
NULL	latin1_swedish_ci
Warnings:
Note	1049	Unknown database 'mysqltest2'

SELECT DATABASE(), @@collation_database;
DATABASE()	@@collation_database
NULL	latin1_swedish_ci

PREPARE stmt_c_3 FROM 'SELECT DATABASE(), @@collation_database';

EXECUTE stmt_c_3;
DATABASE()	@@collation_database
NULL	latin1_swedish_ci

use mysqltest1;

EXECUTE stmt_c_2;
DATABASE()	@@collation_database
NULL	latin1_swedish_ci
Warnings:
Note	1049	Unknown database 'mysqltest2'

SELECT DATABASE(), @@collation_database;
DATABASE()	@@collation_database
mysqltest1	utf8_unicode_ci

EXECUTE stmt_c_3;
DATABASE()	@@collation_database
NULL	latin1_swedish_ci

SELECT DATABASE(), @@collation_database;
DATABASE()	@@collation_database
mysqltest1	utf8_unicode_ci

DROP DATABASE mysqltest1;

use test;

########################################################################
#
# Bug#27430 Crash in subquery code when in PS and table DDL changed
# after PREPARE
# Check the effect of automatic reprepare on query cache
#
########################################################################
drop table if exists t1;
create table t1 (a varchar(255));
insert into t1 (a) values ("Pack my box with five dozen liquor jugs.");
flush status;
prepare stmt from "select a from t1";
execute stmt;
a
Pack my box with five dozen liquor jugs.
set @@global.query_cache_size=0;
alter table t1 add column b int;
execute stmt;
a
Pack my box with five dozen liquor jugs.
set @@global.query_cache_size=102400;
execute stmt;
a
Pack my box with five dozen liquor jugs.
execute stmt;
a
Pack my box with five dozen liquor jugs.
#
# Sic: ALTER TABLE caused an automatic reprepare 
# of the prepared statement. Since the query cache was disabled
# at the time of reprepare, the new prepared statement doesn't
# work with it.
# 
show status like 'Qcache_hits';
Variable_name	Value
Qcache_hits	0
show status like 'Qcache_queries_in_cache';
Variable_name	Value
Qcache_queries_in_cache	0
# Cleanup
deallocate prepare stmt;
drop table t1;
set @@global.query_cache_size=@initial_query_cache_size;
flush status;
