set @@tidb_enable_prepared_plan_cache=true;
drop table if exists t;
create table t (id int, KEY id (id));
insert into t values (1), (2), (3);
prepare stmt from 'select * from t use index(id) where id = ?';
execute stmt using @id;
id
execute stmt using @id;
id
set @id="1";
execute stmt using @id;
id
1
execute stmt using @id2;
id
execute stmt using @id;
id
1
set @@tidb_enable_prepared_plan_cache=false;
drop table if exists t;
create table t (id int, KEY id (id));
insert into t values (1), (2), (3);
prepare stmt from 'select * from t use index(id) where id = ?';
execute stmt using @id;
id
1
execute stmt using @id;
id
1
set @id="1";
execute stmt using @id;
id
1
execute stmt using @id2;
id
execute stmt using @id;
id
1
set @@tidb_enable_prepared_plan_cache=default;
set @@tidb_enable_prepared_plan_cache=true;
drop table if exists t;
create table t (a int, b int, index a_idx(a));
insert into t values (1,1), (2,2), (null,3);
select a, b from t order by b asc;
a	b
1	1
2	2
NULL	3
prepare stmt from 'select a, b from t where ? order by b asc';
execute stmt using @param;
a	b
set @param = true;
execute stmt using @param;
a	b
1	1
2	2
NULL	3
set @param = false;
execute stmt using @param;
a	b
set @param = 1;
execute stmt using @param;
a	b
1	1
2	2
NULL	3
set @param = 0;
execute stmt using @param;
a	b
set @@tidb_enable_prepared_plan_cache=false;
drop table if exists t;
create table t (a int, b int, index a_idx(a));
insert into t values (1,1), (2,2), (null,3);
select a, b from t order by b asc;
a	b
1	1
2	2
NULL	3
prepare stmt from 'select a, b from t where ? order by b asc';
execute stmt using @param;
a	b
set @param = true;
execute stmt using @param;
a	b
1	1
2	2
NULL	3
set @param = false;
execute stmt using @param;
a	b
set @param = 1;
execute stmt using @param;
a	b
1	1
2	2
NULL	3
set @param = 0;
execute stmt using @param;
a	b
set @@tidb_enable_prepared_plan_cache=default;
set @@tidb_enable_prepared_plan_cache=true;
drop table if exists t;
create table t(data mediumblob);
prepare stmt from 'insert t (data) values (?)';
set @a = 'a';
execute stmt using @a;
set @b = 'aaaaaaaaaaaaaaaaaa';
execute stmt using @b;
select * from t;
data
a
aaaaaaaaaaaaaaaaaa
drop table if exists t;
create table t(data decimal);
prepare stmt from 'insert t (data) values (?)';
set @a = '1';
execute stmt using @a;
set @b = '11111.11111';
execute stmt using @b;
select * from t;
data
1
11111
drop table if exists t;
create table t(data decimal(10,3));
prepare stmt from 'insert t (data) values (?)';
set @a = 1.1;
execute stmt using @a;
set @b = 11.11;
execute stmt using @b;
select * from t;
data
1.100
11.110
set @@tidb_enable_prepared_plan_cache=false;
drop table if exists t;
create table t(data mediumblob);
prepare stmt from 'insert t (data) values (?)';
set @a = 'a';
execute stmt using @a;
set @b = 'aaaaaaaaaaaaaaaaaa';
execute stmt using @b;
select * from t;
data
a
aaaaaaaaaaaaaaaaaa
drop table if exists t;
create table t(data decimal);
prepare stmt from 'insert t (data) values (?)';
set @a = '1';
execute stmt using @a;
set @b = '11111.11111';
execute stmt using @b;
select * from t;
data
1
11111
drop table if exists t;
create table t(data decimal(10,3));
prepare stmt from 'insert t (data) values (?)';
set @a = 1.1;
execute stmt using @a;
set @b = 11.11;
execute stmt using @b;
select * from t;
data
1.100
11.110
set @@tidb_enable_prepared_plan_cache=default;
drop table if exists t;
create table t (id int, KEY id (id));
prepare stmt from 'select * from t limit ? offset ?';
prepare stmt from 'select b from t';
Error 1054 (42S22): Unknown column 'b' in 'field list'
prepare stmt from '(select * FROM t) union all (select * FROM t) order by a limit ?';
Error 1054 (42S22): Unknown column 'a' in 'order clause'
drop table if exists t;
prepare stmt from 'create table t (id int, KEY id (id))';
prepare stmt0 from "create table t0(a int primary key)";
prepare stmt1 from "execute stmt0";
Error 1295 (HY000): This command is not supported in the prepared statement protocol yet
prepare stmt2 from "deallocate prepare stmt0";
Error 1295 (HY000): This command is not supported in the prepared statement protocol yet
prepare stmt4 from "prepare stmt3 from 'create table t1(a int, b int)'";
Error 1295 (HY000): This command is not supported in the prepared statement protocol yet
drop table if exists t;
create table t (id int primary key, num int);
insert into t values (1, 1);
insert into t values (2, 2);
insert into t values (3, 3);
prepare stmt from 'select /*+ IGNORE_PLAN_CACHE() */ * from t where id=?';
set @ignore_plan_doma = 1;
execute stmt using @ignore_plan_doma;
id	num
1	1
select @@last_plan_from_cache;
@@last_plan_from_cache
0
prepare stmt from "select /*+ max_execution_time(10) */ sleep(3)";
set @a=now();
execute stmt;
sleep(3)
1
select timediff(now(), @a) < 3;
timediff(now(), @a) < 3
1
set @a=now();
select /*+ max_execution_time(10) */ sleep(3);
sleep(3)
1
select timediff(now(), @a) < 3;
timediff(now(), @a) < 3
1
drop table if exists t;
create table t (i int);
prepare stmt from 'with a as (select /*+ qb_name(qb1) */ * from t)  select /*+ leading(@qb1)*/ * from a;';
set tidb_enable_prepared_plan_cache=1;
set @@tidb_enable_collect_execution_info=0;
prepare stmt from 'SELECT IF(?, 1, 0);';
set @a=1, @b=null, @c=0;
execute stmt using @a;
IF(?, 1, 0)
1
execute stmt using @b;
IF(?, 1, 0)
0
select @@last_plan_from_cache;
@@last_plan_from_cache
0
execute stmt using @c;
IF(?, 1, 0)
0
select @@last_plan_from_cache;
@@last_plan_from_cache
0
set tidb_enable_prepared_plan_cache=default;
set @@tidb_enable_collect_execution_info=default;
set tidb_enable_prepared_plan_cache=1;
drop table if exists IDT_26207;
CREATE TABLE IDT_26207 (col1 bit(1));
insert into  IDT_26207 values(0x0), (0x1);
prepare stmt from 'select hex(t1.col1) from IDT_26207 as t1 left join IDT_26207 as t2 on t1.col1 = t2.col1 where t1.col1 in (?, ?, ?)';
set @a=0x01, @b=0x01, @c=0x01;
execute stmt using @a,@b,@c;
hex(t1.col1)
1
set @a=0x00, @b=0x00, @c=0x01;
execute stmt using @a,@b,@c;
hex(t1.col1)
0
1
select @@last_plan_from_cache;
@@last_plan_from_cache
0
drop table if exists IDT_MC21780;
CREATE TABLE IDT_MC21780 (
COL1 timestamp NULL DEFAULT NULL,
COL2 timestamp NULL DEFAULT NULL,
COL3 timestamp NULL DEFAULT NULL,
KEY U_M_COL (COL1,COL2)
);
insert into IDT_MC21780 values("1970-12-18 10:53:28", "1970-12-18 10:53:28", "1970-12-18 10:53:28");
prepare stmt from 'select/*+ hash_join(t1) */ * from IDT_MC21780 t1 join IDT_MC21780 t2 on t1.col1 = t2.col1 where t1. col1 < ? and t2. col1 in (?, ?, ?);';
set @a="2038-01-19 03:14:07", @b="2038-01-19 03:14:07", @c="2038-01-19 03:14:07", @d="2038-01-19 03:14:07";
execute stmt using @a,@b,@c,@d;
COL1	COL2	COL3	COL1	COL2	COL3
set @a="1976-09-09 20:21:11", @b="2021-07-14 09:28:16", @c="1982-01-09 03:36:39", @d="1970-12-18 10:53:28";
execute stmt using @a,@b,@c,@d;
COL1	COL2	COL3	COL1	COL2	COL3
1970-12-18 10:53:28	1970-12-18 10:53:28	1970-12-18 10:53:28	1970-12-18 10:53:28	1970-12-18 10:53:28	1970-12-18 10:53:28
select @@last_plan_from_cache;
@@last_plan_from_cache
1
set tidb_enable_prepared_plan_cache=default;
set tidb_enable_prepared_plan_cache=1;
set @@tidb_enable_collect_execution_info=0;
drop table if exists tmp2;
create temporary table tmp2 (a int, b int, key(a), key(b));
prepare stmt from 'select * from tmp2;';
execute stmt;
a	b
execute stmt;
a	b
select @@last_plan_from_cache;
@@last_plan_from_cache
0
drop table if exists tmp_t;
create global temporary table tmp_t (id int primary key, a int, b int, index(a)) on commit delete rows;
prepare stmt from 'select * from tmp_t;';
execute stmt;
id	a	b
execute stmt;
id	a	b
select @@last_plan_from_cache;
@@last_plan_from_cache
0
set tidb_enable_prepared_plan_cache=default;
set @@tidb_enable_collect_execution_info=default;
set tidb_enable_prepared_plan_cache=1;
set @@tidb_txn_mode = 'pessimistic';
prepare stmt1 from 'do 1';
set @@tidb_txn_mode = 'optimistic';
prepare stmt1 from 'do 1';
set tidb_enable_prepared_plan_cache=default;
set @@tidb_txn_mode=default;
drop table if exists t;
create table t(a int, key(a));
prepare stmt from 'select * from t limit ?';
set @a = 1.2;
execute stmt using @a;
Error 1210 (HY000): Incorrect arguments to LIMIT
set @a = 1.;
execute stmt using @a;
Error 1210 (HY000): Incorrect arguments to LIMIT
set @a = '0';
execute stmt using @a;
Error 1210 (HY000): Incorrect arguments to LIMIT
set @a = '1';
execute stmt using @a;
Error 1210 (HY000): Incorrect arguments to LIMIT
set @a = 1_2;
execute stmt using @a;
Error 1210 (HY000): Incorrect arguments to LIMIT
drop table if exists t;
create table t(id int, k int);
prepare stmt from 'explain select * from t where id = ? and k = ? group by id, k';
show warnings;
Level	Code	Message
Warning	1105	skip prepared plan-cache: not a SELECT/UPDATE/INSERT/DELETE/SET statement
set @a = 1;
execute stmt using @a, @a;
id	estRows	task	access object	operator info
HashAgg_8	1.00	root		group by:executor__prepared.t.id, executor__prepared.t.k, funcs:firstrow(executor__prepared.t.id)->executor__prepared.t.id, funcs:firstrow(executor__prepared.t.k)->executor__prepared.t.k
└─TableReader_15	0.01	root		data:Selection_14
  └─Selection_14	0.01	cop[tikv]		eq(executor__prepared.t.id, 1), eq(executor__prepared.t.k, 1)
    └─TableFullScan_13	10000.00	cop[tikv]	table:t	keep order:false, stats:pseudo
explain select * from t where id = 1 and k = 1 group by id, k;
id	estRows	task	access object	operator info
HashAgg_8	1.00	root		group by:executor__prepared.t.id, executor__prepared.t.k, funcs:firstrow(executor__prepared.t.id)->executor__prepared.t.id, funcs:firstrow(executor__prepared.t.k)->executor__prepared.t.k
└─TableReader_15	0.01	root		data:Selection_14
  └─Selection_14	0.01	cop[tikv]		eq(executor__prepared.t.id, 1), eq(executor__prepared.t.k, 1)
    └─TableFullScan_13	10000.00	cop[tikv]	table:t	keep order:false, stats:pseudo
prepare stmt from 'explain select * from t where ? = id and ? = k group by id, k';
show warnings;
Level	Code	Message
Warning	1105	skip prepared plan-cache: not a SELECT/UPDATE/INSERT/DELETE/SET statement
set @a = 1;
execute stmt using @a, @a;
id	estRows	task	access object	operator info
HashAgg_8	1.00	root		group by:executor__prepared.t.id, executor__prepared.t.k, funcs:firstrow(executor__prepared.t.id)->executor__prepared.t.id, funcs:firstrow(executor__prepared.t.k)->executor__prepared.t.k
└─TableReader_15	0.01	root		data:Selection_14
  └─Selection_14	0.01	cop[tikv]		eq(1, executor__prepared.t.id), eq(1, executor__prepared.t.k)
    └─TableFullScan_13	10000.00	cop[tikv]	table:t	keep order:false, stats:pseudo
explain select * from t where 1 = id and 1 = k group by id, k;
id	estRows	task	access object	operator info
HashAgg_8	1.00	root		group by:executor__prepared.t.id, executor__prepared.t.k, funcs:firstrow(executor__prepared.t.id)->executor__prepared.t.id, funcs:firstrow(executor__prepared.t.k)->executor__prepared.t.k
└─TableReader_15	0.01	root		data:Selection_14
  └─Selection_14	0.01	cop[tikv]		eq(1, executor__prepared.t.id), eq(1, executor__prepared.t.k)
    └─TableFullScan_13	10000.00	cop[tikv]	table:t	keep order:false, stats:pseudo