into  mysql.com:/home/hf/work/21888/my51-21888

into  mysql.com:/home/hf/work/21888/my50-21888

RTree keys are really different from BTree and need specific
paramters to be set by optimizer to work.
Sometimes optimizer doesn't set those properly.
Here we decided just to add code to check that the parameters
are correct. Hope to fix optimizer sometimes.

into  moonbone.local:/work/18360-bug-5.1-opt-mysql

 - fix moved to 5.1

into  macbook.gmz:/Users/kgeorge/mysql/work/B21174-5.1-opt

 - reversed the patch for 5.0 and moved to 5.1

into  mysql.com:/home/hf/work/mysql-5.0-mrg

result

The IN function aggregates result types of all expressions. It uses that 
type in comparison of left expression and expressions in right part. 
This approach works in most cases. But let's consider the case when the
right part contains both strings and integers. In that case this approach may
cause wrong results because all strings which do not start with a digit are
evaluated as 0.
CASE uses the same approach when a CASE expression is given thus it's also
affected.

The idea behind this fix is to make IN function to compare expressions with
different result types differently. For example a string in the left
part will be compared as string with strings specified in right part and
will be converted to real for comparison to int or real items in the right
part.

A new function called collect_cmp_types() is added. It collects different
result types for comparison of first item in the provided list with each 
other item in the list. 

The Item_func_in class now can refer up to 5 cmp_item objects: 1 for each
result type for comparison purposes. cmp_item objects are allocated according
to found result types. The comparison of the left expression with any
right part expression is now based only on result types of these expressions.

The Item_func_case class is modified in the similar way when a CASE
expression is specified. Now it can allocate up to 5 cmp_item objects
to compare CASE expression with WHEN expressions of different types.
The comparison of the CASE expression with any WHEN expression now based only 
on result types of these expressions.

into  rurik.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug21646

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

Presence of a subquery in the ON expression of a join 
should not block merging the view that contains this join.
Before this patch the such views were converted into 
into temporary table views.

an ALL/ANY quantified subquery in HAVING.
The Item::split_sum_func2 method should not create Item_ref
for objects of any class derived from Item_subselect.

into  mysql.com:/home/hf/work/mysql-5.0-mrg

into  mysql.com:/home/hf/work/mysql-4.1.15428

into  mysql.com:/home/hf/work/mysql-4.1.15428

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

Any default value for a enum fields over UCS2 charsets was corrupted
when we put it into the frm file, as it had been overwritten by its
HEX representation.
To fix it now we save a copy of structure that represents the enum
type and when putting the default values we use this copy. 

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

that returns the results of aggregation by GROUP_CONCAT.
The crash was due to an overflow happened for the field
sortoder->length.
The fix prevents this overflow exploiting the fact that the
value of sortoder->length cannot be greater than the value of
thd->variables.max_sort_length.   

into  rakia.(none):/home/kgeorge/mysql/autopush/B21540-5.0-opt

into  mysql.com:/home/psergey/mysql-5.1-bug22393

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

into  rakia.(none):/home/kgeorge/mysql/autopush/B21540-5.0-opt

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

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.1

fixed when 5.1-win will be pushed into main tree).
Commenting the libmysqld and libmysqld/example subdirectories will allow us 
to upgrade from cmake 2.2 to 2.4.

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.1

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.1

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.1

- Check if we have E(#rows) for 'range' access on the smaller interval 
  on the same index. If yes, adjust the estimate.

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt

  Enabled rpl_sp_effects test due to fixed bug.

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt