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Fix for BUG#25082: default database change on trigger

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execution breaks replication.

When a stored routine is executed, we switch current
database to the database, in which the routine
has been created. When the stored routine finishes,
we switch back to the original database.

The problem was that if the original database does not
exist (anymore) after routine execution, we raised an error.

The fix is to report a warning, and switch to the NULL database.


mysql-test/r/sp.result:
  Updated result file.
mysql-test/t/sp.test:
  Added test case for BUG#25082.
sql/mysql_priv.h:
  1. Change mysql_change_db() prototype;
  2. Polishing.
sql/sp.cc:
  Polishing.
sql/sp_head.cc:
  Polishing.
sql/sql_db.cc:
  1. Polishing.
  2. Fix mysql_change_db().
sql/sql_parse.cc:
  Polishing.
sql/sql_show.cc:
  Polishing.
This commit is contained in:
unknown
2007-03-27 21:55:01 +04:00
parent 21af9a55dd
commit 6a594ffd18
8 changed files with 309 additions and 143 deletions
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7
sql/mysql_priv.h
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@@ -693,7 +693,8 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list);
bool do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db,
char *new_table_name, char *new_table_alias,
bool skip_error);
bool mysql_change_db(THD *thd,const char *name,bool no_access_check);
bool mysql_change_db(THD *thd, const LEX_STRING *new_db_name,
bool force_switch);
void mysql_parse(THD *thd,char *inBuf,uint length);
bool mysql_test_parse_for_slave(THD *thd,char *inBuf,uint length);
bool is_update_query(enum enum_sql_command command);
@@ -937,7 +938,7 @@ void append_definer(THD *thd, String *buffer, const LEX_STRING *definer_user,
/* information schema */
extern LEX_STRING information_schema_name;
extern LEX_STRING INFORMATION_SCHEMA_NAME;
LEX_STRING *make_lex_string(THD *thd, LEX_STRING *lex_str,
const char* str, uint length,
bool allocate_lex_string);
@@ -955,7 +956,7 @@ int fill_schema_column_privileges(THD *thd, TABLE_LIST *tables, COND *cond);
bool get_schema_tables_result(JOIN *join,
enum enum_schema_table_state executed_place);
#define is_schema_db(X) \
!my_strcasecmp(system_charset_info, information_schema_name.str, (X))
!my_strcasecmp(system_charset_info, INFORMATION_SCHEMA_NAME.str, (X))
/* sql_prepare.cc */