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# category: topic: keyword:
#
# impossible_category_1
# impossible_function_1
# impossible_function_5
# impossible_function_2
# impossible_function_1
# impossible_category_2
# impossible_function_3
# impossible_function_6
# impossible_function_4
# impossible_function_6
# impossible_category_3
# impossible_function_7
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insert into mysql.help_category(help_category_id,name)values(10001,'impossible_category_1');
select @category1_id:= 10001;
insert into mysql.help_category(help_category_id,name)values(10002,'impossible_category_2');
select @category2_id:= 10002;
insert into mysql.help_category(help_category_id,name,parent_category_id)values(10003,'impossible_category_3',@category2_id);
select @category3_id:= 10003;
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insert into mysql.help_topic(help_topic_id,name,help_category_id,description,example)values(10101,'impossible_function_1',@category1_id,'description of \n impossible_function1\n','example of \n impossible_function1');
select @topic1_id:= 10101;
insert into mysql.help_topic(help_topic_id,name,help_category_id,description,example)values(10102,'impossible_function_2',@category1_id,'description of \n impossible_function2\n','example of \n impossible_function2');
select @topic2_id:= 10102;
insert into mysql.help_topic(help_topic_id,name,help_category_id,description,example)values(10103,'impossible_function_3',@category2_id,'description of \n impossible_function3\n','example of \n impossible_function3');
select @topic3_id:= 10103;
insert into mysql.help_topic(help_topic_id,name,help_category_id,description,example)values(10104,'impossible_function_4',@category2_id,'description of \n impossible_function4\n','example of \n impossible_function4');
select @topic4_id:= 10104;
insert into mysql.help_topic(help_topic_id,name,help_category_id,description,example)values(10105,'impossible_function_7',@category3_id,'description of \n impossible_function5\n','example of \n impossible_function7');
select @topic5_id:= 10105;
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insert into mysql.help_keyword(help_keyword_id,name)values(10201,'impossible_function_1');
select @keyword1_id:= 10201;
insert into mysql.help_keyword(help_keyword_id,name)values(10202,'impossible_function_5');
select @keyword2_id:= 10202;
insert into mysql.help_keyword(help_keyword_id,name)values(10203,'impossible_function_6');
select @keyword3_id:= 10203;
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insert into mysql.help_relation(help_keyword_id,help_topic_id)values(@keyword1_id,@topic2_id);
insert into mysql.help_relation(help_keyword_id,help_topic_id)values(@keyword2_id,@topic1_id);
insert into mysql.help_relation(help_keyword_id,help_topic_id)values(@keyword3_id,@topic3_id);
insert into mysql.help_relation(help_keyword_id,help_topic_id)values(@keyword3_id,@topic4_id);
##############
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help 'function_of_my_dream';
help '%possible_f%';
help 'impossible_func%';
help 'impossible_category%';
help 'impossible_%';
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help '%function_1';
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help '%function_2';
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help '%function_3';
help '%function_4';
help '%function_5';
help '%function_6';
help '%function_7';
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help '%category_2';
help 'impossible_function_1';
help 'impossible_category_1';
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##############
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--disable_warnings
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alter table mysql.help_relation engine=innodb;
alter table mysql.help_keyword engine=innodb;
alter table mysql.help_topic engine=innodb;
alter table mysql.help_category engine=innodb;
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--enable_warnings
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##############
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help 'function_of_my_dream';
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help '%possible_f%';
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help 'impossible_func%';
help 'impossible_category%';
help 'impossible_%';
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help '%function_1';
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help '%function_2';
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help '%function_3';
help '%function_4';
help '%function_5';
help '%function_6';
help '%function_7';
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help '%category_2';
help 'impossible_function_1';
help 'impossible_category_1';
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##############
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alter table mysql.help_relation engine=myisam;
alter table mysql.help_keyword engine=myisam;
alter table mysql.help_topic engine=myisam;
alter table mysql.help_category engine=myisam;
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delete from mysql.help_topic where help_topic_id=@topic1_id;
delete from mysql.help_topic where help_topic_id=@topic2_id;
delete from mysql.help_topic where help_topic_id=@topic3_id;
delete from mysql.help_topic where help_topic_id=@topic4_id;
delete from mysql.help_topic where help_topic_id=@topic5_id;
delete from mysql.help_category where help_category_id=@category3_id;
delete from mysql.help_category where help_category_id=@category2_id;
delete from mysql.help_category where help_category_id=@category1_id;
delete from mysql.help_keyword where help_keyword_id=@keyword1_id;
delete from mysql.help_keyword where help_keyword_id=@keyword2_id;
delete from mysql.help_keyword where help_keyword_id=@keyword3_id;
delete from mysql.help_relation where help_keyword_id=@keyword1_id and help_topic_id=@topic2_id;
delete from mysql.help_relation where help_keyword_id=@keyword2_id and help_topic_id=@topic1_id;
delete from mysql.help_relation where help_keyword_id=@keyword3_id and help_topic_id=@topic3_id;
delete from mysql.help_relation where help_keyword_id=@keyword3_id and help_topic_id=@topic4_id;
2005-07-28 02:22:47 +02:00
BUG#9953: CONVERT_TZ requires mysql.time_zone_name to be locked
The problem was that some facilities (like CONVERT_TZ() function or
server HELP statement) may require implicit access to some tables in
'mysql' database. This access was done by ordinary means of adding
such tables to the list of tables the query is going to open.
However, if we issued LOCK TABLES before that, we would get "table
was not locked" error trying to open such implicit tables.
The solution is to treat certain tables as MySQL system tables, like
we already do for mysql.proc. Such tables may be opened for reading
at any moment regardless of any locks in effect. The cost of this is
that system table may be locked for writing only together with other
system tables, it is disallowed to lock system tables for writing and
have any other lock on any other table.
After this patch the following tables are treated as MySQL system
tables:
mysql.help_category
mysql.help_keyword
mysql.help_relation
mysql.help_topic
mysql.proc (it already was)
mysql.time_zone
mysql.time_zone_leap_second
mysql.time_zone_name
mysql.time_zone_transition
mysql.time_zone_transition_type
These tables are now opened with open_system_tables_for_read() and
closed with close_system_tables(), or one table may be opened with
open_system_table_for_update() and closed with close_thread_tables()
(the latter is used for mysql.proc table, which is updated as part of
normal MySQL server operation). These functions may be used when
some tables were opened and locked already.
NOTE: online update of time zone tables is not possible during
replication, because there's no time zone cache flush neither on LOCK
TABLES, nor on FLUSH TABLES, so the master may serve stale time zone
data from cache, while on slave updated data will be loaded from the
time zone tables.
2007-03-09 11:12:31 +01:00
--echo End of 4.1 tests.
#
# Test that we can use HELP even under LOCK TABLES. See bug#9953:
# CONVERT_TZ requires mysql.time_zone_name to be locked.
#
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
CREATE TABLE t1 (i INT);
LOCK TABLES t1 WRITE;
HELP no_such_topic;
UNLOCK TABLES;
DROP TABLE t1;
--echo End of 5.1 tests.