mysql-test/r/distinct.result:
  4.1->5.0 merge for bug #16458
   * 5.0 is better in detecting duplicate columns
sql/sql_select.cc:
  4.1->5.0 merge for bug #16458
   * Should not do the optimization if using index for group by
   * chnaged structures in 5.0

into  mysql.com:/home/kgeorge/mysql/5.0/B16458


sql/sql_select.cc:
  Auto merged
mysql-test/r/distinct.result:
  merge 4.1->5.0
mysql-test/t/distinct.test:
  merge 4.1->5.0

'SELECT DISTINCT a,b FROM t1' should not use temp table if there is unique 
index (or primary key) on a.
There are a number of other similar cases that can be calculated without the
use of a temp table : multi-part unique indexes, primary keys or using GROUP BY 
instead of DISTINCT.
When a GROUP BY/DISTINCT clause contains all key parts of a unique
index, then it is guaranteed that the fields of the clause will be
unique, therefore we can optimize away GROUP BY/DISTINCT altogether.
This optimization has two effects:
* there is no need to create a temporary table to compute the
   GROUP/DISTINCT operation (or the temporary table will be smaller if only GROUP 
   is removed and DISTINCT stays or if DISTINCT is removed and GROUP BY stays)
* this causes the statement in effect to become updatable in Connector/Java
because the result set columns will be direct reference to the primary key of 
the table (instead to the temporary table that it currently references). 

Implemented a check that will optimize away GROUP BY/DISTINCT for queries like 
the above.
Currently it will work only for single non-constant table in the FROM clause.


mysql-test/r/distinct.result:
  Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
    - test case
mysql-test/t/distinct.test:
  Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
    - test case
sql/sql_select.cc:
  Bug #16458: Simple SELECT FOR UPDATE causes "Result Set not updatable" error
    - disable GROUP BY if contains the fields of a unique index.

into  rurik.mysql.com:/home/igor/mysql-5.0-opt


mysql-test/t/ctype_utf8.test:
  Auto merged
mysql-test/r/ctype_utf8.result:
  SCCS merged

This was another manifestation of the problems fixed in the
patch for bug 16674.
Wrong calculation of length of the search prefix in the pattern
string led here to a wrong result set for a query in 4.1. 
The bug could be demonstrated for any multi-byte character set. 


mysql-test/r/ctype_utf8.result:
  Added a test case for bug #18359.
mysql-test/t/ctype_utf8.test:
  Added a test case for bug #18359.

into  rurik.mysql.com:/home/igor/mysql-5.0-opt


sql/item_sum.cc:
  Auto merged
mysql-test/r/ctype_ucs.result:
  Manual merge
mysql-test/t/ctype_ucs.test:
  Manual merge

Server crashed in some cases when a query required a MIN/MAX
agrregation for a 'ucs2' field. 
In these cases  the aggregation caused calls of the function
update_tmptable_sum_func that indirectly invoked 
the method Item_sum_hybrid::min_max_update_str_field() 
containing a call to strip_sp for a ucs2 character set.
The latter led directly to the crash as it used my_isspace
undefined for the ucs2 character set.
Actually the call of strip_sp is not needed at all in this
situation and has been removed by the fix.


mysql-test/r/ctype_ucs.result:
  Added a test case for bug #20076.
mysql-test/t/ctype_ucs.test:
  Added a test case for bug #20076.

into  rurik.mysql.com:/home/igor/mysql-5.0-opt


mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged

execution plans in 4.1 and 5.0.

into  rurik.mysql.com:/home/igor/mysql-5.0-opt


mysql-test/t/ctype_utf8.test:
  Auto merged
strings/ctype-mb.c:
  Auto merged
mysql-test/r/ctype_utf8.result:
  SCCS merged

into  rurik.mysql.com:/home/igor/mysql-4.1-opt


mysql-test/r/ctype_utf8.result:
  SCCS merged
mysql-test/t/ctype_utf8.test:
  SCCS merged

into moonbone.local:/work/tmp_merge-5.0-opt-mysql

mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged

into moonbone.local:/work/tmp_merge-5.0-opt-mysql

into moonbone.local:/work/tmp_merge-4.1-opt-mysql

This bug in Field_string::cmp resulted in a wrong comparison 
with keys in partial indexes over multi-byte character fields.
Given field a is declared as a varchar(16) collate utf8_unicode_ci
INDEX(a(4)) gives us an example of such an index.
  
Wrong key comparisons could lead to wrong result sets if 
the selected query execution plan used a range scan by 
a partial index over a utf8 character field.
This also caused wrong results in many other cases.


mysql-test/t/ctype_utf8.test:
  Added test cases for bug #14896.
mysql-test/r/ctype_utf8.result:
  Added test cases for bug #14896.
sql/field.cc:
  Fixed bug #14896.
  This bug in Field_string::cmp resulted in a wrong comparison 
  with keys in partial indexes over multi-byte character fields.
  Given field a is declared as a varchar(16) collate utf8_unicode_ci
  INDEX(a(4)) gives us an example of such an index.
       
  Wrong key comparisons could lead to wrong result sets if 
  the selected query execution plan used a range scan by 
  a partial index over a utf8 character field.
  This also caused wrong results in many other cases.

into  mysql.com:/home/bk/fix-mysql-5.0

into  may.pils.ru:/home/svoj/devel/mysql/BUG20357/mysql-5.0


mysql-test/r/myisam.result:
  Auto merged
mysql-test/t/myisam.test:
  Auto merged
sql/opt_sum.cc:
  Auto merged
mysql-test/mysql-test-run.sh:
  Auto merged

into  may.pils.ru:/home/svoj/devel/mysql/BUG20357/mysql-4.1

into  may.pils.ru:/home/svoj/devel/mysql/BUG20357/mysql-4.1


sql/opt_sum.cc:
  Auto merged
mysql-test/r/myisam.result:
  SCCS merged
mysql-test/t/myisam.test:
  SCCS merged

            functions in queries

Using MAX()/MIN() on table with disabled indexes (by ALTER TABLE)
results in error 124 (wrong index) from storage engine.

The problem was that optimizer use disabled index to optimize
MAX()/MIN(). Normally it must skip disabled index and perform
table scan.

This patch skips disabled indexes for min/max optimization.


mysql-test/r/myisam.result:
  Test case for BUG#20357.
mysql-test/t/myisam.test:
  Test case for BUG#20357.
sql/opt_sum.cc:
  Skip disabled/ignored indexes for min/max optimization.

into  mysql.com:/data0/knielsen/mysql-5.0

Backport Valgrind suppression from mysql-5.1:

D 1.4 05/11/23 22:44:54+02:00 monty@mysql.com 5 4 12/0/154
P mysql-test/valgrind.supp
C Remove warning that may happens becasue threads dies in different order


mysql-test/valgrind.supp:
  Add suppression for Valgrind warning.

into  mysql.com:/home/kgeorge/mysql/5.0/B18080


sql/sql_parse.cc:
  Auto merged

into  mysql.com:/home/marty/MySQL/mysql-5.0

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

mysql-test/t/insert_select.test:
  Auto merged
mysql-test/r/insert_select.result:
  manual merge

mysql-test/r/view_grant.result:
  merged
mysql-test/t/view_grant.test:
  merged

into  mysql.com:/home/kgeorge/mysql/5.0/B20482


sql/sql_base.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged

            schemas
The function check_one_table_access() called to check access to tables in 
SELECT/INSERT/UPDATE was doing additional checks/modifications that don't hold
in the context of setup_tables_and_check_access().
That's why the check_one_table() was split into two : the functionality needed by
setup_tables_and_check_access() into check_single_table_access() and the rest of 
the functionality stays in check_one_table_access() that is made to call the new
check_single_table_access() function.


mysql-test/r/view_grant.result:
  Bug #20482: failure on Create join view with sources views/tables in different 
              schemas
  - test suite for the bug
mysql-test/t/view_grant.test:
  Bug #20482: failure on Create join view with sources views/tables in different 
              schemas
  - test suite for the bug
sql/mysql_priv.h:
  Bug #20482: failure on Create join view with sources views/tables in different 
              schemas
  - check_one_table_access split into 2
sql/sql_base.cc:
  Bug #20482: failure on Create join view with sources views/tables in different 
              schemas
  - the new sub-function called
sql/sql_parse.cc:
  Bug #20482: failure on Create join view with sources views/tables in different 
              schemas
  - check_one_table_access() split into two : check_single_table_access() to 
    actually check access to the table(ro) and check_one_table_access() that calls
    check_single_table_access() and checks also the tables belonging to sub selects
    or implicitly opened tables.

into  mysql.com:/home/marty/MySQL/mysql-5.0


sql/ha_ndbcluster.cc:
  Auto merged

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  rurik.mysql.com:/home/igor/mysql-4.1-opt

into  mysql.com:/usr/home/ram/work/mysql-5.0


mysql-test/r/func_str.result:
  Auto merged
mysql-test/t/func_str.test:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/item_strfunc.h:
  Auto merged
mysql-test/r/func_time.result:
  SCCS merged

The length of the prefix of the pattern string in the LIKE predicate that 
determined the index range to be scanned was calculated incorrectly for
multi-byte character sets. 
As a result of this in 4. 1 the the scanned range was wider then necessary
if the prefix contained not only one-byte characters.  
In 5.0 additionally it caused missing some rows from the result set.


mysql-test/r/ctype_utf8.result:
  Added test cases for bug #16674.
mysql-test/t/ctype_utf8.test:
  Added test cases for bug #16674.
strings/ctype-mb.c:
  Fixed bug #16674.
  The length of the prefix of the pattern string in the LIKE predicate that 
  determined the index range to be scanned was calculated incorrectly for
  multi-byte character sets. 
  As a result of this in 4. 1 the the scanned range was wider then necessary
  if the prefix contained not only one-byte characters.  
  In 5.0 additionally it caused missing some rows from the result set.
      
  The function my_like_range_mb was fixed to calculate the length of
  the prefix in a pattern string correctly in all cases.

into moonbone.local:/work/tmp_merge-5.0-opt-mysql


mysql-test/r/insert_select.result:
  Auto merged
mysql-test/t/insert_select.test:
  Auto merged
sql/sql_select.cc:
  Auto merged