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MDEV-9524 Cannot load from mysql.event when sql_mode is set to PAD_CHAR_TO_FULL_LENGTH

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The patch fixes the problem with loading information from system tables
(e.g. event and help related tables) when PAD_CHAR_TO_FULL_LENGTH is enabled,
as well as includes some additional minor improvements:
- refactoring in get_field() to return an error rather than success
  if strmake_root() failed
- removing of duplicate code in similar functions:
  char *get_field(MEM_ROOT *mem, Field *field)
  bool get_field(MEM_ROOT *mem, Field *field, String *res)
This commit is contained in:
Alexander Barkov
2016-06-21 21:26:31 +04:00
parent 69f1a3215e
commit 21479a6bb3
6 changed files with 86 additions and 19 deletions
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15
mysql-test/r/help.result
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@ -148,6 +148,21 @@ help 'impossible_category_1';
source_category_name name is_it_category
impossible_category_1 impossible_function_1 N
impossible_category_1 impossible_function_2 N
# MDEV-9524 Cannot load from mysql.event when sql_mode is set to PAD_CHAR_TO_FULL_LENGTH
help 'impossible_function_1';
name description example
impossible_function_1 description of
impossible_function1
example of
impossible_function1
SET sql_mode=PAD_CHAR_TO_FULL_LENGTH;
help 'impossible_function_1';
name description example
impossible_function_1 description of
impossible_function1
example of
impossible_function1
SET sql_mode=DEFAULT;
alter table mysql.help_relation engine=innodb;
alter table mysql.help_keyword engine=innodb;
alter table mysql.help_topic engine=innodb;