152 lines
3.5 KiB
Plaintext
152 lines
3.5 KiB
Plaintext
prepare pr1 from 'select ? in (1,?,?)';
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set @a=1, @b=2, @c=3;
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execute pr1 using @a,@b,@c;
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? in (1,?,?)
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1
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prepare pr2 from 'select 3 in (1,?,?)';
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set @a=2, @b=3;
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execute pr2 using @a,@b;
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3 in (1,?,?)
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1
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prepare pr3 from 'select ? in (1,2,3)';
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set @a=4;
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execute pr3 using @a;
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? in (1,2,3)
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0
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prepare pr4 from 'select ? in (?,?,?)';
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set @a=1, @b=2, @c=3, @d=4;
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execute pr4 using @a,@b,@c,@d;
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? in (?,?,?)
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0
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drop table if exists t;
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create table t(a int);
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prepare stmt from 'SELECT * FROM t order by rand()';
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execute stmt;
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a
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prepare stmt from 'SELECT * FROM t order by now()';
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execute stmt;
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a
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drop table if exists t;
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create table t(a int);
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insert into t values(1), (2), (3);
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set @@session.sql_select_limit = 1;
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prepare stmt from 'SELECT * FROM t';
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execute stmt;
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a
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1
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set @@session.sql_select_limit = default;
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execute stmt;
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a
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1
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2
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3
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set @@session.sql_select_limit = 2;
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execute stmt;
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a
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1
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2
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set @@session.sql_select_limit = 1;
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execute stmt;
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a
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1
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set @@session.sql_select_limit = default;
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execute stmt;
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a
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1
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2
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3
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set @@session.sql_select_limit = 2;
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execute stmt;
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a
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1
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2
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set sql_select_limit=default;
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set tidb_enable_prepared_plan_cache=ON;
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drop table if exists t;
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create table t(a int);
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prepare stmt from 'select * from t where a = ?';
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set @a = 1;
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execute stmt using @a;
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a
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select @@last_plan_from_cache;
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@@last_plan_from_cache
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0
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execute stmt using @a;
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a
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select @@last_plan_from_cache;
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@@last_plan_from_cache
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1
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set tidb_enable_prepared_plan_cache=default;
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set tidb_enable_prepared_plan_cache=ON;
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drop table if exists t;
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create table t(a int auto_increment primary key);
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prepare stmt from 'select row_count()';
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insert into t values();
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execute stmt;
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row_count()
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1
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insert into t values(),(),();
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execute stmt;
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row_count()
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3
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set tidb_enable_prepared_plan_cache=default;
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set tidb_enable_prepared_plan_cache=ON;
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drop table if exists t1;
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create table t1 (a varchar(40));
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insert into t1 values ('C1'),('R1');
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prepare stmt1 from 'select a from t1 where a rlike ?';
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set @a='^C.*';
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execute stmt1 using @a;
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a
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C1
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set @a='^R.*';
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execute stmt1 using @a;
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a
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R1
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set tidb_enable_prepared_plan_cache=default;
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set tidb_enable_prepared_plan_cache=ON;
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drop table if exists t;
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create table t(col_int int);
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insert into t values(null);
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prepare stmt from 'SELECT ((col_int is true) = ?) AS res FROM t';
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set @p0='0.8';
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execute stmt using @p0;
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res
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0
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set @p0='0';
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execute stmt using @p0;
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res
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1
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prepare stmt from 'SELECT UCASE(?) < col_int from t;';
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set @a1 = 'xayh7vrWVNqZtzlJmdJQUwAHnkI8Ec';
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execute stmt using @a1;
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UCASE(?) < col_int
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NULL
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delete from t;
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insert into t values(1);
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prepare stmt from 'SELECT col_int < ? FROM t';
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set @p0='-184467440737095516167.1';
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execute stmt using @p0;
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col_int < ?
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0
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set tidb_enable_prepared_plan_cache=default;
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set tidb_enable_prepared_plan_cache=ON;
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drop table if exists t;
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create table t(col_double double);
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insert into t values (1);
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set tidb_enable_vectorized_expression=false;
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insert into mysql.expr_pushdown_blacklist values('cast', 'tikv,tiflash,tidb', 'for test');
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admin reload expr_pushdown_blacklist;
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prepare stmt from 'SELECT * FROM (SELECT col_double AS c0 FROM t) t WHERE (ABS((REPEAT(?, ?) OR 5617780767323292672)) < LN(EXP(c0)) + (? ^ ?))';
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set @a1 = 'JuvkBX7ykVux20zQlkwDK2DFelgn7';
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set @a2 = 1;
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set @a3 = -112990.35179796701;
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set @a4 = 87997.92704840179;
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execute stmt using @a1, @a2, @a3, @a4;
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c0
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1
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set tidb_enable_vectorized_expression=default;
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delete from mysql.expr_pushdown_blacklist where name = 'cast' and store_type = 'tikv,tiflash,tidb' and reason = 'for test';
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admin reload expr_pushdown_blacklist;
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set tidb_enable_prepared_plan_cache=default;
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