Patch for the following bugs:

  - BUG#11986: Stored routines and triggers can fail if the code
    has a non-ascii symbol
  - BUG#16291: mysqldump corrupts string-constants with non-ascii-chars
  - BUG#19443: INFORMATION_SCHEMA does not support charsets properly
  - BUG#21249: Character set of SP-var can be ignored
  - BUG#25212: Character set of string constant is ignored (stored routines)
  - BUG#25221: Character set of string constant is ignored (triggers)

There were a few general problems that caused these bugs:
1. Character set information of the original (definition) query for views,
   triggers, stored routines and events was lost.
2. mysqldump output query in client character set, which can be
   inappropriate to encode definition-query.
3. INFORMATION_SCHEMA used strings with mixed encodings to display object
   definition;

1. No query-definition-character set.

In order to compile query into execution code, some extra data (such as
environment variables or the database character set) is used. The problem
here was that this context was not preserved. So, on the next load it can
differ from the original one, thus the result will be different.

The context contains the following data:
  - client character set;
  - connection collation (character set and collation);
  - collation of the owner database;

The fix is to store this context and use it each time we parse (compile)
and execute the object (stored routine, trigger, ...).

2. Wrong mysqldump-output.

The original query can contain several encodings (by means of character set
introducers). The problem here was that we tried to convert original query
to the mysqldump-client character set.

Moreover, we stored queries in different character sets for different
objects (views, for one, used UTF8, triggers used original character set).

The solution is
  - to store definition queries in the original character set;
  - to change SHOW CREATE statement to output definition query in the
    binary character set (i.e. without any conversion);
  - introduce SHOW CREATE TRIGGER statement;
  - to dump special statements to switch the context to the original one
    before dumping and restore it afterwards.

Note, in order to preserve the database collation at the creation time,
additional ALTER DATABASE might be used (to temporary switch the database
collation back to the original value). In this case, ALTER DATABASE
privilege will be required. This is a backward-incompatible change.

3. INFORMATION_SCHEMA showed non-UTF8 strings

The fix is to generate UTF8-query during the parsing, store it in the object
and show it in the INFORMATION_SCHEMA.

Basically, the idea is to create a copy of the original query convert it to
UTF8. Character set introducers are removed and all text literals are
converted to UTF8.

This UTF8 query is intended to provide user-readable output. It must not be
used to recreate the object.  Specialized SHOW CREATE statements should be
used for this.

The reason for this limitation is the following: the original query can
contain symbols from several character sets (by means of character set
introducers).

Example:

  - original query:
    CREATE VIEW v1 AS SELECT _cp1251 'Hello' AS c1;

  - UTF8 query (for INFORMATION_SCHEMA):
    CREATE VIEW v1 AS SELECT 'Hello' AS c1;


client/mysqldump.c:
  Set original character set and collation before dumping definition query.
include/my_sys.h:
  Move out-parameter to the end of list.
mysql-test/lib/mtr_report.pl:
  Ignore server-warnings during the test case.
mysql-test/r/create.result:
  Update result file.
mysql-test/r/ctype_cp932_binlog_stm.result:
  Update result file.
mysql-test/r/events.result:
  Update result file.
mysql-test/r/events_bugs.result:
  Update result file.
mysql-test/r/events_grant.result:
  Update result file.
mysql-test/r/func_in.result:
  Update result file.
mysql-test/r/gis.result:
  Update result file.
mysql-test/r/grant.result:
  Update result file.
mysql-test/r/information_schema.result:
  Update result file.
mysql-test/r/information_schema_db.result:
  Update result file.
mysql-test/r/lowercase_view.result:
  Update result file.
mysql-test/r/mysqldump.result:
  Update result file.
mysql-test/r/ndb_sp.result:
  Update result file.
mysql-test/r/ps.result:
  Update result file.
mysql-test/r/rpl_replicate_do.result:
  Update result file.
mysql-test/r/rpl_sp.result:
  Update result file.
mysql-test/r/rpl_trigger.result:
  Update result file.
mysql-test/r/rpl_view.result:
  Update result file.
mysql-test/r/show_check.result:
  Update result file.
mysql-test/r/skip_grants.result:
  Update result file.
mysql-test/r/sp-destruct.result:
  Update result file.
mysql-test/r/sp-error.result:
  Update result file.
mysql-test/r/sp-security.result:
  Update result file.
mysql-test/r/sp.result:
  Update result file.
mysql-test/r/sql_mode.result:
  Update result file.
mysql-test/r/system_mysql_db.result:
  Update result file.
mysql-test/r/temp_table.result:
  Update result file.
mysql-test/r/trigger-compat.result:
  Update result file.
mysql-test/r/trigger-grant.result:
  Update result file.
mysql-test/r/trigger.result:
  Update result file.
mysql-test/r/view.result:
  Update result file.
mysql-test/r/view_grant.result:
  Update result file.
mysql-test/t/events.test:
  Update test case (new columns added).
mysql-test/t/information_schema.test:
  Update test case (new columns added).
mysql-test/t/show_check.test:
  Test case for SHOW CREATE TRIGGER in prepared statements and
  stored routines.
mysql-test/t/sp-destruct.test:
  Update test case (new columns added).
mysql-test/t/sp.test:
  Update test case (new columns added).
mysql-test/t/view.test:
  Update test.
mysys/charset.c:
  Move out-parameter to the end of list.
scripts/mysql_system_tables.sql:
  Add new columns to mysql.proc and mysql.event.
scripts/mysql_system_tables_fix.sql:
  Add new columns to mysql.proc and mysql.event.
sql/event_data_objects.cc:
  Support new attributes for events.
sql/event_data_objects.h:
  Support new attributes for events.
sql/event_db_repository.cc:
  Support new attributes for events.
sql/event_db_repository.h:
  Support new attributes for events.
sql/events.cc:
  Add new columns to SHOW CREATE event resultset.
sql/mysql_priv.h:
  1. Introduce Object_creation_ctx;
  2. Introduce SHOW CREATE TRIGGER;
  3. Introduce auxilary functions.
sql/sp.cc:
  Add support for new store routines attributes.
sql/sp_head.cc:
  Add support for new store routines attributes.
sql/sp_head.h:
  Add support for new store routines attributes.
sql/sql_lex.cc:
  Generate UTF8-body on parsing/lexing.
sql/sql_lex.h:
  1. Generate UTF8-body on parsing/lexing.
  2. Introduce SHOW CREATE TRIGGER.
sql/sql_parse.cc:
  Introduce SHOW CREATE TRIGGER.
sql/sql_partition.cc:
  Update parse_sql().
sql/sql_prepare.cc:
  Update parse_sql().
sql/sql_show.cc:
  Support new attributes for views
sql/sql_trigger.cc:
  Support new attributes for views
sql/sql_trigger.h:
  Support new attributes for views
sql/sql_view.cc:
  Support new attributes for views
sql/sql_yacc.yy:
  1. Add SHOW CREATE TRIGGER statement.
  2. Generate UTF8-body for views, stored routines, triggers and events.
sql/table.cc:
  Introduce Object_creation_ctx.
sql/table.h:
  Introduce Object_creation_ctx.
sql/share/errmsg.txt:
  Add new errors.
mysql-test/include/ddl_i18n.check_events.inc:
  Aux file for test suite.
mysql-test/include/ddl_i18n.check_sp.inc:
  Aux file for test suite.
mysql-test/include/ddl_i18n.check_triggers.inc:
  Aux file for test suite.
mysql-test/include/ddl_i18n.check_views.inc:
  Aux file for test suite.
mysql-test/include/have_cp1251.inc:
  Aux file for test suite.
mysql-test/include/have_cp866.inc:
  Aux file for test suite.
mysql-test/include/have_koi8r.inc:
  Aux file for test suite.
mysql-test/include/have_utf8.inc:
  Aux file for test suite.
mysql-test/r/ddl_i18n_koi8r.result:
  Result file.
mysql-test/r/ddl_i18n_utf8.result:
  Result file.
mysql-test/r/have_cp1251.require:
  Aux file for test suite.
mysql-test/r/have_cp866.require:
  Aux file for test suite.
mysql-test/r/have_koi8r.require:
  Aux file for test suite.
mysql-test/r/have_utf8.require:
  Aux file for test suite.
mysql-test/t/ddl_i18n_koi8r.test:
  Complete koi8r test case for the CS patch.
mysql-test/t/ddl_i18n_utf8.test:
  Complete utf8 test case for the CS patch.

1 files changed, 12 insertions, 12 deletions

diff --git a/mysql-test/r/events_grant.result b/mysql-test/r/events_grant.result
index 278cc5956f5..1aadf7e11f4 100644
--- a/mysql-test/r/events_grant.result
+++ b/mysql-test/r/events_grant.result
@@ -2,8 +2,8 @@ CREATE DATABASE IF NOT EXISTS events_test;
 use events_test;
 CREATE EVENT one_event ON SCHEDULE EVERY 10 SECOND DO SELECT 123;
 SHOW EVENTS;
-Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator
-events_test	one_event	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	ENABLED	1
+Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
+events_test	one_event	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	ENABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
 SELECT EVENT_CATALOG, EVENT_SCHEMA, EVENT_NAME, DEFINER, EVENT_BODY, EVENT_DEFINITION, EVENT_TYPE, EXECUTE_AT, INTERVAL_VALUE, INTERVAL_FIELD, STATUS,ON_COMPLETION, EVENT_COMMENT FROM INFORMATION_SCHEMA.EVENTS ORDER BY EVENT_SCHEMA, EVENT_NAME;
 EVENT_CATALOG	EVENT_SCHEMA	EVENT_NAME	DEFINER	EVENT_BODY	EVENT_DEFINITION	EVENT_TYPE	EXECUTE_AT	INTERVAL_VALUE	INTERVAL_FIELD	STATUS	ON_COMPLETION	EVENT_COMMENT
 NULL	events_test	one_event	root@localhost	SQL	SELECT 123	RECURRING	NULL	10	SECOND	ENABLED	NOT PRESERVE	
@@ -29,8 +29,8 @@ ERROR 42000: Access denied for user 'ev_test'@'localhost' to database 'events_te
 USE events_test;
 "We should see one event";
 SHOW EVENTS;
-Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator
-events_test	one_event	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	ENABLED	1
+Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
+events_test	one_event	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	ENABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
 SELECT CONCAT("Let's create some new events from the name of ", USER());
 CONCAT("Let's create some new events from the name of ", USER())
 Let's create some new events from the name of ev_test@localhost
@@ -40,18 +40,18 @@ CREATE EVENT two_event ON SCHEDULE EVERY 20 SECOND ON COMPLETION NOT PRESERVE CO
 CREATE EVENT three_event ON SCHEDULE EVERY 20 SECOND ON COMPLETION PRESERVE COMMENT "three event" DO SELECT 123;
 "Now we should see 3 events:";
 SHOW EVENTS;
-Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator
-events_test	one_event	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	ENABLED	1
-events_test	three_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1
-events_test	two_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1
+Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
+events_test	one_event	root@localhost	SYSTEM	RECURRING	NULL	10	#	#	NULL	ENABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
+events_test	three_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
+events_test	two_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
 "This should show us only 2 events:";
 SHOW EVENTS LIKE 't%event';
-Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator
-events_test	three_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1
-events_test	two_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1
+Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
+events_test	three_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
+events_test	two_event	ev_test@localhost	SYSTEM	RECURRING	NULL	20	#	#	NULL	ENABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
 "This should show us no events:";
 SHOW EVENTS FROM test LIKE '%';
-Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator
+Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
 GRANT EVENT ON events_test2.* TO ev_test@localhost;
 USE events_test2;
 CREATE EVENT four_event ON SCHEDULE EVERY 20 SECOND DO SELECT 42;