Opening certain tables that have different definitions in .MYI and
.frm may result in a server crash.

Compare .MYI and .frm definition when myisam table is opened. In case
definitions are diffirent refuse to open such table.

No test case, since it requires broken table.


storage/myisam/ha_myisam.cc:
  Compare .MYI and .frm definition when myisam table is opened. In case
  definitions are diffirent refuse to open such table.

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-5.1-engines


storage/myisam/mi_open.c:
  Auto merged

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-5.1-engines


mysql-test/r/merge.result:
  Auto merged
mysql-test/t/merge.test:
  Auto merged
sql/sql_parse.cc:
  Auto merged
storage/myisam/ha_myisam.cc:
  Auto merged
storage/myisam/mi_create.c:
  Auto merged

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-5.0-engines


myisam/mi_create.c:
  Auto merged
mysql-test/t/merge.test:
  Auto merged
sql/ha_myisam.cc:
  Auto merged
sql/sql_parse.cc:
  Use local.
mysql-test/r/merge.result:
  SCCS merged

            differences in tables
Certain merge tables were wrongly reported as having incorrect definition:
- Some fields that are 1 byte long (e.g. TINYINT, CHAR(1)), might
  be internally casted (in certain cases) to a different type on a
  storage engine layer. (affects 4.1 and up)
- If tables in a merge (and a MERGE table itself) had short VARCHAR column (less
  than 4 bytes) and at least one (but not all) tables were ALTER'ed (even to an
  identical table: ALTER TABLE xxx ENGINE=yyy), table definitions went ouf of
  sync. (affects 4.1 only)

This is fixed by relaxing a check for underlying conformance and setting
field type to FIELD_TYPE_STRING in case varchar is shorter than 4
when a table is created.


myisam/mi_create.c:
  Added a comment.
mysql-test/r/merge.result:
  A test case for bug#26881.
mysql-test/t/merge.test:
  A test case for bug#26881.
sql/ha_myisam.cc:
  Relaxed some checks performed by check_definition():
  As comparing of fulltext keys (and key segments) is not yet implemented,
  only return an error in case one of keys is fulltext and other is not.
  Otherwise, if both keys are fulltext, accept them as is.
  
  As comparing of spatial keys (and key segments) is not yet implemented,
  only return an error in case one of keys is spatial and other is not.
  Otherwise, if both keys are spatial, accept them as is.
  
  A workaround to handle situation when field is casted from FIELD_SKIP_ZERO
  to FIELD_NORMAL. This could happen only in case field length is 1 and row
  format is fixed.
sql/sql_parse.cc:
  When a table that has varchar field shorter than 4 is created, field type is
  set to FIELD_TYPE_VAR_STRING. Later, when a table is modified using alter
  table, field type is changed to FIELD_TYPE_STRING (see Field_string::type).
  That means HA_OPTION_PACK_RECORD flag might be lost and thus null_bit might
  be shifted by alter table, in other words alter table doesn't create 100%
  equal table definition.
  
  This is usually not a problem, since when a table is created/altered,
  definition on a storage engine layer is based on one that is passed from
  sql layer. But it is a problem for merge engine - null_bit is shifted when
  a table (merge or underlying) is altered.
  
  Set field type to FIELD_TYPE_STRING in case FIELD_TYPE_VAR_STRING is shorter
  than 4 when a table is created as it is done in Field::type.

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-5.1-engines


sql/field.h:
  Auto merged
storage/myisam/rt_index.c:
  Auto merged

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-5.1-engines


storage/myisam/mi_open.c:
  Use local.

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-5.0-engines

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-5.0-engines


myisam/rt_index.c:
  Auto merged
sql/field.h:
  Auto merged

into  mysql.com:/home/svoj/devel/mysql/BUG26881/mysql-4.1-engines

into  moonbone.local:/mnt/gentoo64/work/bk-trees/mysql-5.1-opt


mysql-test/r/explain.result:
  Auto merged
mysql-test/r/func_default.result:
  Auto merged
mysql-test/r/func_regexp.result:
  Auto merged
mysql-test/r/func_test.result:
  Auto merged
mysql-test/r/having.result:
  Auto merged
mysql-test/r/olap.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
mysql-test/r/union.result:
  Auto merged
mysql-test/r/varbinary.result:
  Auto merged
sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/opt_range.cc:
  Auto merged
sql/sql_union.cc:
  Auto merged
mysql-test/r/func_str.result:
  Manually merged
mysql-test/t/func_str.test:
  Manually merged

into  moonbone.local:/mnt/gentoo64/work/25373-bug-5.0-opt-mysql


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

When the SUBSTRING() function was used over a LONGTEXT field the max_length of
the SUBSTRING() result was wrongly calculated and set to 0. As the max_length
parameter is used while tmp field creation it limits the length of the result
field and leads to printing an empty string instead of the correct result.

Now the Item_func_substr::fix_length_and_dec() function correctly calculates
the max_length parameter.


mysql-test/t/func_str.test:
  Added a test case for the bug#15757: Wrong SUBSTRING() result when a tmp table was employed.
mysql-test/r/func_str.result:
  Added a test case for the bug#15757: Wrong SUBSTRING() result when a tmp table was employed.
sql/item_strfunc.cc:
  Bug#15757: Wrong SUBSTRING() result when a tmp table was employed.
  Now the Item_func_substr::fix_length_and_dec() function correctly calculates
  the max_length parameter.

into  moonbone.local:/mnt/gentoo64/work/25373-bug-5.0-opt-mysql


mysql-test/r/func_str.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
mysql-test/r/union.result:
  Auto merged
sql/item.cc:
  Auto merged

into  chilla.local:/home/mydev/mysql-4.1-bug25673

into  blade08.mysql.com:/data0/istruewing/autopush/mysql-5.0-bug25673

Crash happened because the function get_best_group_min_max detected
joins with ROLLUP incorrectly.


mysql-test/r/olap.result:
  Added a test case for bug #26830.
mysql-test/t/olap.test:
  Added a test case for bug #26830.

away.

Additional fix for bug#22331. Now Item_field prints its value in the case of
the const field.


mysql-test/r/varbinary.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/union.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/subselect.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/func_test.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/having.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/func_regexp.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/func_str.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/func_default.result:
  Corrected test case after fix for bug#22331.
mysql-test/r/explain.result:
  Corrected test case after fix for bug#22331.
sql/sql_union.cc:
  Bug#22331: Wrong WHERE in EXPLAIN EXTENDED when all expressions were optimized
  away.
  Cleanup of the SELECT_LEX::order_list list.
sql/item.h:
  Bug#22331: Wrong WHERE in EXPLAIN EXTENDED when all expressions were optimized
  away.
  Added the print() member function to the Item_field class.
sql/item.cc:
  Bug#22331: Wrong WHERE in EXPLAIN EXTENDED when all expressions were optimized
  away.
  Added the print() member function to the Item_field class.

into  blade08.mysql.com:/data0/istruewing/autopush/mysql-5.1-bug25673

into  chilla.local:/home/mydev/mysql-5.1-bug25673


storage/myisam/rt_index.c:
  Auto merged

into  chilla.local:/home/mydev/mysql-5.0-bug25673


myisam/rt_index.c:
  Auto merged

Fixed a compiler warning, deteced by pushbuild only.

into  mysql.com:/home/hf/work/mrg/mysql-5.1-opt


mysql-test/r/union.result:
  Auto merged
mysql-test/t/union.test:
  Auto merged
sql/item.cc:
  Auto merged

into  magare.gmz:/home/kgeorge/mysql/autopush/B26281-5.0-opt

into  mysql.com:/home/hf/work/mrg/mysql-5.1-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B26281-5.0-opt


sql/item_strfunc.cc:
  Auto merged
mysql-test/r/func_str.result:
  resolved test merge conflicts
mysql-test/t/func_str.test:
  resolved test merge conflicts

 Fixed boundry checks in the INSERT() function:
 were one off.


mysql-test/r/func_str.result:
  Bug #26281: test case
mysql-test/t/func_str.test:
  Bug #26281: test case
sql/item_strfunc.cc:
  Bug #26281: fixed boundry checks

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


sql/item.cc:
  Auto merged

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug26661

into  mysql.com:/home/hf/work/mrg/mysql-5.1-opt


sql/sql_select.cc:
  Auto merged

construct references invalid name.
Derived tables currently cannot use outer references.
Thus there is no outer context for them.
The 4.1 code takes this fact into account while the 
Item_field::fix_outer_field code of 5.0 lost the check that blocks
any attempts to resolve names in outer context for derived tables.


mysql-test/r/union.result:
  Added a test case for bug #26661.
mysql-test/t/union.test:
  Added a test case for bug #26661.
sql/item.cc:
  Fixed bug #26661.
  Derived tables currently cannot use outer references.
  Thus there is no outer context for them.
  The 4.1 code takes this fact into account while the 
  Item_field::fix_outer_field code of 5.0 lost the check that blocks
  any attempts to resolve names in outer context for derived tables.

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


sql/sql_select.cc:
  Auto merged

into  mysql.com:/home/hf/work/mrg/mysql-5.1-opt


mysql-test/r/func_str.result:
  Auto merged
mysql-test/r/order_by.result:
  Auto merged
mysql-test/r/subselect.result:
  Auto merged
mysql-test/t/order_by.test:
  Auto merged
mysql-test/t/sp.test:
  Auto merged
sql/item.cc:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_insert.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
mysql-test/r/sp.result:
  merging
mysql-test/r/view.result:
  merging
mysql-test/t/func_str.test:
  merging
mysql-test/t/view.test:
  merging

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

mysql-test/r/sp.result:
  merging
mysql-test/r/view.result:
  merging

mysql-test/r/view.result:
  merging

into  blade08.mysql.com:/data0/istruewing/autopush/mysql-5.1-bug25673

into  mysql.com:/home/hf/work/mrg/mysql-5.1-opt

into  chilla.local:/home/mydev/mysql-5.1-bug25673


storage/myisam/rt_index.c:
  Auto merged