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Fix for bug#39182: Binary log producing incompatible character set query

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from stored procedure. 

Problem: we replace all references to local variables in stored procedures     
with NAME_CONST(name, value) logging to the binary log. However, if the
value's collation differs we might get an 'illegal mix of collation'           
error as we don't pass the collation to the function.

Fix: pass the value's collation to NAME_CONST().

Note: actually we should pass to NAME_CONST() the value's derivation as well.
It's impossible without the parser modifying. Now we always set the 
derivation to DERIVATION_IMPLICIT, the same as local variables have.


mysql-test/r/binlog.result:
  Fix for bug#39182: Binary log producing incompatible character set query
  from stored procedure.
    - test result.
mysql-test/r/ctype_cp932_binlog.result:
  Fix for bug#39182: Binary log producing incompatible character set query
  from stored procedure.
    - results adjusted.
mysql-test/r/rpl_sp.result:
  Fix for bug#39182: Binary log producing incompatible character set query
  from stored procedure.
    - results adjusted.
mysql-test/t/binlog.test:
  Fix for bug#39182: Binary log producing incompatible character set query
  from stored procedure.
    - test case.
sql/item.cc:
  Fix for bug#39182: Binary log producing incompatible character set query
  from stored procedure.
    - allow NAME_CONST() to get _charset'foo' COLLATE 'bar' strings
  (see Item_func_set_collation).
sql/sp_head.cc:
  Fix for bug#39182: Binary log producing incompatible character set query
  from stored procedure. 
    - pass the value's collation to NAME_CONST().
This commit is contained in:
Ramil Kalimullin
2008-10-01 14:48:47 +05:00
parent bf09a809a6
commit d3e317d16b
6 changed files with 82 additions and 8 deletions
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31
mysql-test/r/binlog.result
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@@ -582,4 +582,35 @@ master-bin.000001 4 Format_desc 1 98 Server version, Binlog ver: 4
master-bin.000001 98 Query 1 219 use `test`; create table t1 (a bigint unsigned, b bigint(20) unsigned)
master-bin.000001 219 Query 1 343 use `test`; insert into t1 values (9999999999999999,14632475938453979136)
master-bin.000001 343 Query 1 419 use `test`; drop table t1
CREATE DATABASE bug39182 DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;
USE bug39182;
CREATE TABLE t1 (a VARCHAR(255) COLLATE utf8_unicode_ci)
DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
CREATE PROCEDURE p1()
BEGIN
DECLARE s1 VARCHAR(255);
SET s1= "test";
CREATE TEMPORARY TABLE tmp1
SELECT * FROM t1 WHERE a LIKE CONCAT("%", s1, "%");
SELECT
COLLATION(NAME_CONST('s1', _utf8'test')) c1,
COLLATION(NAME_CONST('s1', _utf8'test' COLLATE utf8_unicode_ci)) c2,
COLLATION(s1) c3,
COERCIBILITY(NAME_CONST('s1', _utf8'test')) d1,
COERCIBILITY(NAME_CONST('s1', _utf8'test' COLLATE utf8_unicode_ci)) d2,
COERCIBILITY(s1) d3;
DROP TEMPORARY TABLE tmp1;
END//
CALL p1();
c1 c2 c3 d1 d2 d3
utf8_general_ci utf8_unicode_ci utf8_unicode_ci 2 2 2
SHOW BINLOG EVENTS FROM 1285;
Log_name Pos Event_type Server_id End_log_pos Info
master-bin.000001 1285 Query 1 1483 use `bug39182`; CREATE TEMPORARY TABLE tmp1
SELECT * FROM t1 WHERE a LIKE CONCAT("%", NAME_CONST('s1',_utf8'test' COLLATE 'utf8_unicode_ci'), "%")
master-bin.000001 1483 Query 1 1575 use `bug39182`; DROP TEMPORARY TABLE tmp1
DROP PROCEDURE p1;
DROP TABLE t1;
DROP DATABASE bug39182;
USE test;
End of 5.0 tests