# TestProfiling
select * from information_schema.profiling;
set @@profiling=1;
select * from information_schema.profiling;

# TestSchemataTables
select * from information_schema.SCHEMATA where schema_name='mysql';
drop user if exists schemata_tester;
create user schemata_tester;

connect (conn1, localhost, schemata_tester,, information_schema);
select count(*) from information_schema.SCHEMATA;
select * from information_schema.SCHEMATA where schema_name='mysql';
select * from information_schema.SCHEMATA where schema_name='INFORMATION_SCHEMA';

connection default;
CREATE ROLE r_mysql_priv;
GRANT ALL PRIVILEGES ON mysql.* TO r_mysql_priv;
GRANT r_mysql_priv TO schemata_tester;

connection conn1;
set role r_mysql_priv;
select count(*) from information_schema.SCHEMATA;
select * from information_schema.SCHEMATA;

connection default;
disconnect conn1;

# TestTableIDAndIndexID
drop table if exists executor__infoschema_reader.t;
create table executor__infoschema_reader.t (a int, b int, primary key(a), key k1(b));
select index_id from information_schema.tidb_indexes where table_schema = 'executor__infoschema_reader' and table_name = 't';
select tidb_table_id > 0 from information_schema.tables where table_schema = 'executor__infoschema_reader' and table_name = 't';

# TestSchemataCharacterSet
drop database if exists `foo`;
CREATE DATABASE `foo` DEFAULT CHARACTER SET = 'utf8mb4';
select default_character_set_name, default_collation_name FROM information_schema.SCHEMATA  WHERE schema_name = 'foo';
drop database `foo`;

# TestViews
drop view if exists executor__infoschema_reader.v1;
CREATE DEFINER='root'@'localhost' VIEW executor__infoschema_reader.v1 AS SELECT 1;
select TABLE_COLLATION is null from INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='VIEW';
SELECT * FROM information_schema.views WHERE table_schema='executor__infoschema_reader' AND table_name='v1';
SELECT table_catalog, table_schema, table_name, table_type, engine, version, row_format, table_rows, avg_row_length, data_length, max_data_length, index_length, data_free, auto_increment, update_time, check_time, table_collation, checksum, create_options, table_comment FROM information_schema.tables WHERE table_schema='executor__infoschema_reader' AND table_name='v1';

# TestColumnsTables
drop table if exists t;
create table t (bit bit(10) DEFAULT b'100');
SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'executor__infoschema_reader' AND TABLE_NAME = 't';
drop table if exists t;
set time_zone='+08:00';
drop table if exists t;
create table t (b timestamp(3) NOT NULL DEFAULT '1970-01-01 08:00:01.000');
select column_default from information_schema.columns where TABLE_NAME='t' and TABLE_SCHEMA='executor__infoschema_reader';
set time_zone='+04:00';
select column_default from information_schema.columns where TABLE_NAME='t' and TABLE_SCHEMA='executor__infoschema_reader';
set time_zone=default;
drop table if exists t;
create table t (a bit DEFAULT (rand()));
select column_default from information_schema.columns where TABLE_NAME='t' and TABLE_SCHEMA='executor__infoschema_reader';
drop table if exists t;
CREATE TABLE t (`COL3` bit(1) NOT NULL,b year) ;
select column_type from  information_schema.columns where TABLE_SCHEMA = 'executor__infoschema_reader' and TABLE_NAME = 't';
## For issue: https://github.com/pingcap/tidb/issues/43379
select ordinal_position from information_schema.columns where table_schema=database() and table_name='t' and column_name='b';

# TestEngines
select * from information_schema.ENGINES;

# TestDataTypesMaxLengthAndOctLength
# https://github.com/pingcap/tidb/issues/25467
drop table if exists t;
create table t (a varchar(255) collate ascii_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a varchar(255) collate utf8mb4_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a varchar(255) collate utf8_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a char(10) collate ascii_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a char(10) collate utf8mb4_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a set('a', 'b', 'cccc') collate ascii_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a set('a', 'b', 'cccc') collate utf8mb4_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a enum('a', 'b', 'cccc') collate ascii_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;
create table t (a enum('a', 'b', 'cccc') collate utf8mb4_bin);
select character_maximum_length, character_octet_length from information_schema.columns where table_schema=(select database()) and table_name='t';
drop table t;

# TestDDLJobs
set global tidb_ddl_enable_fast_reorg = false;
set global tidb_enable_dist_task = false;
drop database if exists test_ddl_jobs;
create database test_ddl_jobs;
select db_name, job_type from information_schema.DDL_JOBS limit 1;
use test_ddl_jobs;
create table t (a int);
select db_name, table_name, job_type from information_schema.DDL_JOBS where DB_NAME = 'test_ddl_jobs' and table_name = 't';
select job_type from information_schema.DDL_JOBS group by job_type having job_type = 'create table';
select distinct job_type from information_schema.DDL_JOBS where job_type = 'create table' and start_time > str_to_date('20190101','%Y%m%d%H%i%s');
drop user if exists DDL_JOBS_tester;
create user DDL_JOBS_tester;

connect(conn1, localhost, DDL_JOBS_tester,, information_schema);
select DB_NAME, TABLE_NAME from information_schema.DDL_JOBS where DB_NAME = 'test_ddl_jobs' and TABLE_NAME = 't';

connection default;
CREATE ROLE r_priv;
GRANT ALL PRIVILEGES ON test_ddl_jobs.* TO r_priv;
GRANT r_priv TO DDL_JOBS_tester;

connection conn1;
set role r_priv;
select DB_NAME, TABLE_NAME from information_schema.DDL_JOBS where DB_NAME = 'test_ddl_jobs' and TABLE_NAME = 't';

connection default;
create table tt (a int, b int);
alter table tt add index ta(a), add column c int, add unique index tb(b), add column d int;
select db_name, table_name, job_type from information_schema.DDL_JOBS limit 4;

disconnect conn1;
drop database test_ddl_jobs;
use executor__infoschema_reader;
set global tidb_ddl_enable_fast_reorg = default;
set global tidb_enable_dist_task = default;

# TestKeyColumnUsage
select * from information_schema.KEY_COLUMN_USAGE where TABLE_NAME='stats_meta' and COLUMN_NAME='table_id';
create user key_column_tester;

connect (conn1, localhost, key_column_tester,, information_schema);
select * from information_schema.KEY_COLUMN_USAGE where TABLE_NAME != 'CLUSTER_SLOW_QUERY';

connection default;
CREATE ROLE r_stats_meta ;
GRANT ALL PRIVILEGES ON mysql.stats_meta TO r_stats_meta;
GRANT r_stats_meta TO key_column_tester;

connection conn1;
set role r_stats_meta;
select count(*)>0 from information_schema.KEY_COLUMN_USAGE where TABLE_NAME='stats_meta';
select count(*)>0 from information_schema.KEY_COLUMN_USAGE where upper(TABLE_NAME)='STATS_META';
select count(*)>0 from information_schema.KEY_COLUMN_USAGE where lower(TABLE_NAME)='stats_meta';

connection default;
disconnect conn1;

# TestPartitionTablesStatsCache
# https://github.com/pingcap/tidb/issues/32693
drop table if exists e, e2;
CREATE TABLE e ( id INT NOT NULL, fname VARCHAR(30), lname VARCHAR(30)) PARTITION BY RANGE (id) (
        PARTITION p0 VALUES LESS THAN (50),
        PARTITION p1 VALUES LESS THAN (100),
        PARTITION p2 VALUES LESS THAN (150),
        PARTITION p3 VALUES LESS THAN (MAXVALUE));
CREATE TABLE e2 ( id INT NOT NULL, fname VARCHAR(30), lname VARCHAR(30));
SELECT PARTITION_NAME, TABLE_ROWS FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_NAME = 'e' and table_schema=(select database());
INSERT INTO e VALUES (1669, "Jim", "Smith"), (337, "Mary", "Jones"), (16, "Frank", "White"), (2005, "Linda", "Black");
set tidb_enable_exchange_partition='on';
ALTER TABLE e EXCHANGE PARTITION p0 WITH TABLE e2;
INSERT INTO e VALUES (41, "Michael", "Green");
analyze table e;
SELECT PARTITION_NAME, TABLE_ROWS FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_NAME = 'e';
set tidb_enable_exchange_partition=default;

# TestMetricTables
select count(*) > 0 from information_schema.`METRICS_TABLES`;
select * from information_schema.`METRICS_TABLES` where table_name='tidb_qps';

# TestTableConstraintsTable
select * from information_schema.TABLE_CONSTRAINTS where TABLE_NAME='gc_delete_range';

# Test for tables that have moved from information_schema to performance_schema
# https://github.com/pingcap/tidb/issues/9154
SELECT TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA='information_schema' AND TABLE_NAME IN ('GLOBAL_VARIABLES','SESSION_VARIABLES','GLOBAL_STATUS','SESSION_STATUS');

# TestSequences
drop sequence if exists seq, seq2;
CREATE SEQUENCE seq maxvalue 10000000;
SELECT * FROM information_schema.sequences WHERE sequence_schema='executor__infoschema_reader' AND sequence_name='seq';
DROP SEQUENCE seq;
CREATE SEQUENCE seq start = -1 minvalue -1 maxvalue 10 increment 1 cache 10;
SELECT * FROM information_schema.sequences WHERE sequence_schema='executor__infoschema_reader' AND sequence_name='seq';
CREATE SEQUENCE seq2 start = -9 minvalue -10 maxvalue 10 increment -1 cache 15;
SELECT * FROM information_schema.sequences WHERE sequence_schema='executor__infoschema_reader' AND sequence_name='seq2';
SELECT TABLE_CATALOG, TABLE_SCHEMA, TABLE_NAME , TABLE_TYPE, ENGINE, TABLE_ROWS FROM information_schema.tables WHERE TABLE_TYPE='SEQUENCE' AND TABLE_NAME='seq2' and table_schema='executor__infoschema_reader';

# TestTablesPKType
drop table if exists t_int, t_implicit, t_common;
create table t_int (a int primary key, b int);
SELECT TIDB_PK_TYPE FROM information_schema.tables where table_schema = 'executor__infoschema_reader' and table_name = 't_int';
set tidb_enable_clustered_index=int_only;
create table t_implicit (a varchar(64) primary key, b int);
SELECT TIDB_PK_TYPE FROM information_schema.tables where table_schema = 'executor__infoschema_reader' and table_name = 't_implicit';
set tidb_enable_clustered_index=on;
create table t_common (a varchar(64) primary key, b int);
SELECT TIDB_PK_TYPE FROM information_schema.tables where table_schema = 'executor__infoschema_reader' and table_name = 't_common';
SELECT TIDB_PK_TYPE FROM information_schema.tables where table_schema = 'INFORMATION_SCHEMA' and table_name = 'TABLES';
set tidb_enable_clustered_index=default;

# TestNullColumns
drop table if exists t;
CREATE TABLE t ( id int DEFAULT NULL);
CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`1.1.1.1` SQL SECURITY DEFINER VIEW `v_test` (`type`) AS SELECT NULL AS `type` FROM `t` AS `f`;
select * from  information_schema.columns where TABLE_SCHEMA = 'executor__infoschema_reader' and TABLE_NAME = 'v_test';

# TestUserPrivilegesTable
drop user if exists usageuser;
create user usageuser;

connect (conn1, localhost, usageuser,, information_schema);
SELECT * FROM information_schema.user_privileges WHERE grantee="'usageuser'@'%'";

connection default;
GRANT SELECT ON *.* to usageuser;

connection conn1;
SELECT * FROM information_schema.user_privileges WHERE grantee="'usageuser'@'%'";

connection default;
GRANT SELECT ON *.* to usageuser WITH GRANT OPTION;

connection conn1;
SELECT * FROM information_schema.user_privileges WHERE grantee="'usageuser'@'%'";

connection default;
GRANT BACKUP_ADMIN ON *.* to usageuser;

connection conn1;
SELECT * FROM information_schema.user_privileges WHERE grantee="'usageuser'@'%'" ORDER BY privilege_type;

connection default;
disconnect conn1;

# test information_schema.VARIABLES_INFO DEFAULT_VALUE
select VARIABLE_NAME from information_schema.VARIABLES_INFO where DEFAULT_VALUE = CURRENT_VALUE and variable_name in ('tidb_enable_async_commit','tidb_enable_1pc', 'tidb_mem_oom_action', 'tidb_enable_auto_analyze', 'tidb_row_format_version', 'tidb_txn_assertion_level', 'tidb_enable_mutation_checker', 'tidb_pessimistic_txn_fair_locking') order by VARIABLE_NAME;
set global tidb_enable_async_commit = default;
set global tidb_enable_1pc = default;
set global tidb_mem_oom_action = default;
set global tidb_enable_auto_analyze = default;
set global tidb_row_format_version = default;
set global tidb_txn_assertion_level = default;
set global tidb_enable_mutation_checker = default;
set global tidb_pessimistic_txn_fair_locking = default;
select a.VARIABLE_NAME from information_schema.VARIABLES_INFO as a, mysql.GLOBAL_VARIABLES as b where a.VARIABLE_NAME = b.VARIABLE_NAME and a.DEFAULT_VALUE = b.VARIABLE_VALUE and a.CURRENT_VALUE = b.VARIABLE_VALUE and a.variable_name in ('tidb_enable_async_commit','tidb_enable_1pc', 'tidb_mem_oom_action', 'tidb_enable_auto_analyze', 'tidb_row_format_version', 'tidb_txn_assertion_level', 'tidb_enable_mutation_checker', 'tidb_pessimistic_txn_fair_locking') order by VARIABLE_NAME;


# test issue51942
drop table if exists t;
CREATE TABLE t (a int, b int, c varchar(5), primary key(a), index idx(c)) PARTITION BY RANGE (a) (PARTITION p0 VALUES LESS THAN (6), PARTITION p1 VALUES LESS THAN (11), PARTITION p2 VALUES LESS THAN (16));
insert into t(a, b, c) values(1, 2, 'c'), (7, 3, 'd'), (12, 4, 'e');
analyze table t;
select sleep(1);
select table_rows, avg_row_length, data_length, index_length from information_schema.tables where table_name='t' AND TABLE_SCHEMA='executor__infoschema_reader';


# Cover reading from tables: Indexes, Views, KeyColumnUsage, TableConstraints
drop table if exists test.t;
select * from information_schema.tidb_indexes where table_name = 't';
--sorted_result
select * from information_schema.tidb_indexes where table_schema = 'executor__infoschema_reader';
--sorted_result
select * from information_schema.tidb_indexes where table_schema = 'executor__infoschema_reader' and table_name = 't';
--sorted_result
select * from information_schema.tidb_indexes where table_schema = 'executor__infoschema_reader' or table_name = 't';
select * from information_schema.tidb_indexes where table_schema = 'executor__infoschema_reader' and column_name = 'c';
select * from information_schema.tidb_indexes where table_schema = 'executor__infoschema_reader' and table_name = 'non_exist';

select * from information_schema.views where table_name = 'v1';
select * from information_schema.views where table_name = 'non_exist';
--sorted_result
select * from information_schema.views where table_schema = 'executor__infoschema_reader';
select * from information_schema.views where table_schema = 'non_exist';
select * from information_schema.views where table_schema = 'executor__infoschema_reader' and table_name = 'v1';
--sorted_result
select * from information_schema.views where table_schema = 'executor__infoschema_reader' or table_name = 'v1';

select * from information_schema.key_column_usage where table_name = 't';
--sorted_result
select * from information_schema.key_column_usage where table_schema = 'executor__infoschema_reader';
select * from information_schema.key_column_usage where table_schema = 'executor__infoschema_reader' and table_name = 't';
--sorted_result
select * from information_schema.key_column_usage where table_schema = 'executor__infoschema_reader' or table_name = 't';
select * from information_schema.key_column_usage where table_schema = 'executor__infoschema_reader' and column_name = 'c';
select * from information_schema.key_column_usage where table_schema = 'executor__infoschema_reader' and column_name = 'non_exist';

CREATE TABLE tc(a INT CHECK(a > 10) NOT ENFORCED, b INT, c INT, CONSTRAINT c1 CHECK (b > c));
--sorted_result
select * from information_schema.table_constraints where table_name = 'tc';
--sorted_result
select * from information_schema.table_constraints where table_schema = 'executor__infoschema_reader';
select * from information_schema.table_constraints where table_schema = 'executor__infoschema_reader' and table_name = 'tc';
--sorted_result
select * from information_schema.table_constraints where table_schema = 'executor__infoschema_reader' or table_name = 'tc';
select * from information_schema.table_constraints where table_schema = 'executor__infoschema_reader' and table_name = 'non_exist';
--sorted_result
select * from information_schema.table_constraints where table_schema = 'executor__infoschema_reader' and CONSTRAINT_NAME = 'c1';

# TestTables
select TABLE_CATALOG,TABLE_SCHEMA,TABLE_NAME,TABLE_TYPE,ENGINE,VERSION from information_schema.tables where table_name = 't';
select table_name, table_schema from information_schema.tables where table_name = 't';
select table_name from information_schema.tables where table_name = 't';
explain format='plan_tree' select table_name, table_schema from information_schema.tables;
select count(*) from information_schema.tables where table_name = 't';
select count(table_name) from information_schema.tables where table_name = 't';

drop table if exists t;
create table t (c text);
alter table t add index idx_t (c(16));
select SUB_PART from information_schema.statistics where TABLE_SCHEMA = 'executor__infoschema_reader' and TABLE_NAME = 't';

# Query should return nothing when WHERE clauses are always false.
# https://github.com/pingcap/tidb/issues/57345
select table_name from information_schema.columns where table_name = 'a' and table_name = 'b';
select table_name from information_schema.columns where table_schema = 'a' and table_schema = 'b';
select table_name from information_schema.tables where table_name = 'a' and table_name = 'b';
select table_name from information_schema.tables where table_schema = 'a' and table_schema = 'b';
select table_name from information_schema.partitions where table_name = 'a' and table_name = 'b';
select table_name from information_schema.partitions where table_schema = 'a' and table_schema = 'b';
select table_name from information_schema.statistics where table_name = 'a' and table_name = 'b';
select table_name from information_schema.statistics where table_schema = 'a' and table_schema = 'b';
select table_name from information_schema.referential_constraints where table_name = 'a' and table_name = 'b';
select table_name from information_schema.referential_constraints where constraint_schema = 'a' and constraint_schema = 'b';

drop database if exists test1;
create database test1;
use test1;
create table t10(id int);
create table t11 like t10;
create table t12 like t10;
create table t13 like t10;
create table t14 like t10;
create table t15 like t10;
create table t16 like t10;
create table t17 like t10;
create table t18 like t10;
create table t19 like t10;

drop database if exists test2;
create database test2;
use test2;
create table t20(id int);
create table t21 like t20;
create table t22 like t20;
create table t23 like t20;
create table t24 like t20;
create table t25 like t20;
create table t26 like t20;
create table t27 like t20;
create table t28 like t20;
create table t29 like t20;

SELECT table_schema, table_name,data_length FROM information_schema.TABLES
WHERE (TABLE_NAME IN ('t10','t11','t12','t13','t14','t15','t16','t17','t18','t19','t20','t21','t22','t23','t24','t25','t26','t27','t28','t29'));
drop database test1;
drop database test2;

# https://github.com/pingcap/tidb/issues/62020
drop database if exists executor__infoschema_reader_2;
create database executor__infoschema_reader_2;
use executor__infoschema_reader_2;
create table t1 (a int);
create table t2 (a int);
create table t3 (a int);
insert into t1 values (1);
insert into t2 values (1), (2);
insert into t3 values (1), (2), (3);
analyze table t1;
analyze table t2;
analyze table t3;
select TABLE_NAME, TABLE_ROWS from information_schema.tables where table_schema = 'executor__infoschema_reader_2';
drop table t1;
drop table t2;
drop table t3;

create table pt1 (a int primary key, b int) partition by hash (a) partitions 4;
create table pt2 (a int primary key, b int) partition by hash (a) partitions 4;
create table pt3 (a int primary key, b int) partition by hash (a) partitions 4;
insert into pt1 values (1, 1);
insert into pt2 values (1, 1), (2, 2);
insert into pt3 values (1, 1), (2, 2), (3, 3);
analyze table pt1;
analyze table pt2;
analyze table pt3;
select TABLE_NAME, TABLE_ROWS from information_schema.partitions where table_schema = 'executor__infoschema_reader_2';
drop table pt1;
drop table pt2;
drop table pt3;
use executor__infoschema_reader;

# TestPartialIndexInTiDBIndexes
drop table if exists t;
create table t (col1 int primary key, col2 int, key idx(col2) where col1 > 100);
select TABLE_SCHEMA,TABLE_NAME,PREDICATE from information_schema.tidb_indexes where predicate is not null;