database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Bug#31384 DATE_ADD() and DATE_SUB() return binary data

Browse Source 
Problem: DATE_ADD() is a hybrid function and can return
DATE, DATETIME or VARCHAR data type depending on arguments.

In case of VARCHAR data type, DATE_ADD() reported "binary" character set,
which was wrong.

Fix: make DATE_ADD() return @character_set_connection in VARCHAR context.
 @ mysql-test/include/ctype_numconv.inc
   Adding tests
 @ mysql-test/r/ctype_binary.result
   Adding tests
 @ mysql-test/r/ctype_cp1251.result
   Adding tests
 @ mysql-test/r/ctype_latin1.result
   Adding tests
 @ mysql-test/r/ctype_ucs.result
   Adding tests
 @ mysql-test/r/ctype_utf8.result
   Adding tests
 @ sql/item_strfunc.cc
  - Moving code from Item_str_ascii_func::val_str() to
  Item_str_func::val_str_from_val_str_ascii(), as
  this code needs to be shared by Item_date_add_interval.
  - Adding str2 parameter to be used as a buffer, instead of
   using private ascii_buf member.
 @ sql/item_strfunc.h
  - Moving code from Item_str_ascii_func::val_str() to
  Item_str_func::val_str_from_val_str_ascii()
  - Removing "String *val_str_convert_from_ascii(String *str, String *ascii_buf)"
    prototype as it was neither used nor declared.
 @ sql/item_timefunc.h
  - Overwriting parent's charset_for_protocol() method,
    becase we need to behave differenlty in VARCHAR and DATE/DATETYPE context.
  - Adding ascii_buf for conversion.
  - Adding val_str_ascii() prototype.
  - Adding val_str() which uses newly added
    Item_str_func::val_str_from_val_str_ascii(),
    passing ascii_buf as a conversion buffer.
This commit is contained in:
Alexander Barkov
2011-02-10 11:18:08 +03:00
parent 6f7e87cef0
commit 7d88b552e2
10 changed files with 272 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
mysql-test/include/ctype_numconv.inc
View File

@ -1737,6 +1737,32 @@ EXPLAIN SELECT * FROM t1 WHERE date_column BETWEEN '2010-09-01' AND '2010-10-01'
DROP TABLE t1;
--echo #
--echo # Bug #31384 DATE_ADD() and DATE_SUB() return binary data
--echo #
SELECT @@collation_connection, @@character_set_results;
CREATE TABLE t1 AS
SELECT
DATE_SUB('2007-08-03', INTERVAL 1 MINUTE) AS field_str1,
DATE_SUB('2007-08-03 17:33:00', INTERVAL 1 MINUTE) AS field1_str2,
DATE_SUB(DATE('2007-08-03'), INTERVAL 1 DAY) AS field_date,
DATE_SUB(CAST('2007-08-03 17:33:00' AS DATETIME), INTERVAL 1 MINUTE) AS field_datetime;
SHOW CREATE TABLE t1;
DROP TABLE t1;
--enable_metadata
SELECT
DATE_SUB('2007-08-03', INTERVAL 1 DAY) AS field_str1,
DATE_SUB('2007-08-03 17:33:00', INTERVAL 1 MINUTE) AS field1_str2,
DATE_SUB(DATE('2007-08-03'), INTERVAL 1 DAY) AS field_date,
DATE_SUB(CAST('2007-08-03 17:33:00' AS DATETIME), INTERVAL 1 MINUTE) AS field_datetime;
--disable_metadata
SELECT
HEX(DATE_SUB('2007-08-03', INTERVAL 1 MINUTE)) AS field_str1,
HEX(DATE_SUB('2007-08-03 17:33:00', INTERVAL 1 MINUTE)) AS field1_str2,
HEX(DATE_SUB(DATE('2007-08-03'), INTERVAL 1 DAY)) AS field_date,
HEX(DATE_SUB(CAST('2007-08-03 17:33:00' AS DATETIME), INTERVAL 1 MINUTE)) AS field_datetime;
--echo #
--echo # Bug#52159 returning time type from function and empty left join causes debug assertion
--echo #