~percona-dev/percona-server/release-5.1.51-11-bug_fix_611844

 select count(*) from t1 where

 key1a = 2 and key1b is null and key3a = 2 and key3b is null;

 count(*)

@@ -44,14 +44,17 @@

 select * from v1;

 c

 GLOBAL_VARIABLES

 KEY_COLUMN_USAGE

 PARTITIONS

 TABLES

 TABLE_CONSTRAINTS

 TABLE_PRIVILEGES

 columns_priv

 db

 event

 where table_schema='information_schema' limit 2;

 TABLE_NAME     TABLE_TYPE      ENGINE

 CHARACTER_SETS SYSTEM VIEW     MEMORY

 TRIGGERS

 create database information_schema;

 ERROR 42000: Access denied for user 'root'@'localhost' to database 'information_schema'

 TABLES SYSTEM VIEW

 TABLE_CONSTRAINTS      SYSTEM VIEW

 TABLE_PRIVILEGES       SYSTEM VIEW

 TRIGGERS       SYSTEM VIEW

 create table t1(a int);

 ERROR 42S02: Unknown table 't1' in information_schema

 TABLES

 TABLE_CONSTRAINTS

 TABLE_PRIVILEGES

 TRIGGERS

 select table_name from tables where table_name='user';

 table_name

 FILES  CREATE_TIME     datetime

 FILES  UPDATE_TIME     datetime

 FILES  CHECK_TIME      datetime

 PARTITIONS     CREATE_TIME     datetime

 PARTITIONS     UPDATE_TIME     datetime

 PARTITIONS     CHECK_TIME      datetime

 TABLES CREATE_TIME     datetime

 TABLES UPDATE_TIME     datetime

 TABLES CHECK_TIME      datetime

 event  execute_at      datetime

 event  last_executed   datetime

 event  starts  datetime

 TABLE_NAME     COLUMN_NAME     PRIVILEGES

 COLUMNS        TABLE_NAME      select

 COLUMN_PRIVILEGES      TABLE_NAME      select

 KEY_COLUMN_USAGE       TABLE_NAME      select

 PARTITIONS     TABLE_NAME      select

 REFERENTIAL_CONSTRAINTS        TABLE_NAME      select

 TABLES TABLE_NAME      select

 TABLE_CONSTRAINTS      TABLE_NAME      select

 TABLE_PRIVILEGES       TABLE_NAME      select

 SELECT table_schema, count(*) FROM information_schema.TABLES WHERE table_schema IN ('mysql', 'INFORMATION_SCHEMA', 'test', 'mysqltest') AND table_name<>'ndb_binlog_index' AND table_name<>'ndb_apply_status' GROUP BY TABLE_SCHEMA;

 table_schema   count(*)

-information_schema     28

 mysql  22

 create table t1 (i int, j int);

 create trigger trg1 before insert on t1 for each row

         );

 table_name     column_name

 CHARACTER_SETS CHARACTER_SET_NAME

 GLOBAL_VARIABLES       VARIABLE_NAME

 KEY_COLUMN_USAGE       CONSTRAINT_SCHEMA

 PARTITIONS     TABLE_SCHEMA

 TABLES TABLE_SCHEMA

 TABLE_CONSTRAINTS      CONSTRAINT_SCHEMA

 TABLE_PRIVILEGES       TABLE_SCHEMA

 SELECT t.table_name, c1.column_name

 FROM information_schema.tables t

 INNER JOIN

         );

 table_name     column_name

 CHARACTER_SETS CHARACTER_SET_NAME

 GLOBAL_VARIABLES       VARIABLE_NAME

 KEY_COLUMN_USAGE       CONSTRAINT_SCHEMA

 PARTITIONS     TABLE_SCHEMA

 TABLES TABLE_SCHEMA

 TABLE_CONSTRAINTS      CONSTRAINT_SCHEMA

 TABLE_PRIVILEGES       TABLE_SCHEMA

 DROP TABLE IF EXISTS bug23037;

 DROP FUNCTION IF EXISTS get_value;

 SELECT COLUMN_NAME, MD5(COLUMN_DEFAULT), LENGTH(COLUMN_DEFAULT) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='bug23037';

 group by t.table_name order by num1, t.table_name;

 table_name     group_concat(t.table_schema, '.', t.table_name) num1

 CHARACTER_SETS information_schema.CHARACTER_SETS       1

 COLLATIONS     information_schema.COLLATIONS   1

 COLLATION_CHARACTER_SET_APPLICABILITY  information_schema.COLLATION_CHARACTER_SET_APPLICABILITY        1

 COLUMNS        information_schema.COLUMNS      1

 EVENTS information_schema.EVENTS       1

 FILES  information_schema.FILES        1

 GLOBAL_STATUS  information_schema.GLOBAL_STATUS        1

 KEY_COLUMN_USAGE       information_schema.KEY_COLUMN_USAGE     1

 PARTITIONS     information_schema.PARTITIONS   1

 PLUGINS        information_schema.PLUGINS      1

 TABLES information_schema.TABLES       1

 TABLE_CONSTRAINTS      information_schema.TABLE_CONSTRAINTS    1

 TABLE_PRIVILEGES       information_schema.TABLE_PRIVILEGES     1

 GLOBAL_VARIABLES

 KEY_COLUMN_USAGE

 PARTITIONS

@@ -30,14 +34,39 @@

 TABLES

 TABLE_CONSTRAINTS

 | GLOBAL_VARIABLES                      |

 | KEY_COLUMN_USAGE                      |

 | PARTITIONS                            |

@@ -104,23 +108,48 @@

 | TABLES                                |

 | TABLE_CONSTRAINTS                     |

 | GLOBAL_VARIABLES                      |

 | KEY_COLUMN_USAGE                      |

 | PARTITIONS                            |

@@ -137,9 +167,31 @@

 | TABLES                                |

 | TABLE_CONSTRAINTS                     |

 #

 # Bug #34335

 #

 SHOW CREATE TABLE t1;

 DROP TABLE t1;

+