The parser is allocating Item_field for references by name in ORDER BY
 expressions. Such expressions however may point not only to Item_field 
 in the select list (or to a table column) but also to an arbitrary Item. 
 This causes Item_field::fix_fields to throw an error about missing 
 column.
 The fix substitutes Item_field for the reference with an Item_ref when 
 not pointing to Item_field.


mysql-test/r/order_by.result:
  Bug #22457: Column alias in ORDER BY works, but not if in an expression
   - test case
mysql-test/t/order_by.test:
  Bug #22457: Column alias in ORDER BY works, but not if in an expression
   - test case
sql/item.cc:
  Bug #22457: Column alias in ORDER BY works, but not if in an expression
   - transform the Item_field made by the parser into Item_ref if it 
     doesn't point to Item_field and it is in allowed context

into  mysql.com:/usersnfs/abotchkov/mysql-4.1-opt1

into  mysql.com:/home/hf/work/0current_stmt/my41-current_stmt

the incompatibility was caused by current_stmt member added to the MYSQL
structure.
It's possible to move it to THD structure instead which saves ABI


include/mysql.h:
  member moved to the THD structure
libmysqld/lib_sql.cc:
  now we use THD member here
sql/sql_class.h:
  current_stmt member added for the embedded server

into  mysql.com:/home/hf/work/w3475/my41-w3475

client/mysqltest.c:
  wrong 'while' was added instead of 'if'

Necessary code added to mysqltest.c.
Disabled tests are available now.


client/mysqltest.c:
  do_send_query function implemented, so now 'send' command will be
  run in separate thread for the embedded server.
  Mutex and condition added to the 'connection' struct for syncronisation
  purposes. Yes it'd be easier if we had pthread_join() command
libmysql/libmysql.c:
  this isn't actually needed and causes problems in embedded server
mysql-test/t/bdb-deadlock.test:
  test is available for the embedded server now
mysql-test/t/flush.test:
  test is available for the embedded server now
mysql-test/t/flush_block_commit.test:
  test is available for the embedded server now
mysql-test/t/innodb-deadlock.test:
  test is available for the embedded server now
mysql-test/t/innodb-lock.test:
  test is available for the embedded server now
mysql-test/t/lock_multi.test:
  test is available for the embedded server now
mysql-test/t/rename.test:
  test is available for the embedded server now
mysql-test/t/show_check.test:
  test is available for the embedded server now
mysql-test/t/status.test:
  test is available for the embedded server now

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

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-4.1-opt


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

If elements a not top-level IN subquery were accessed by an index and 
the subquery result set included  a NULL value then the quantified
predicate that contained the subquery was evaluated to NULL when 
it should return a non-null value.


mysql-test/r/subselect.result:
  Added a test case for bug #23478.
mysql-test/t/subselect.test:
  Added a test case for bug #23478.

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


mysql-test/r/repair.result:
  Manual merge.
mysql-test/t/repair.test:
  Manual merge.

into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-4.1-opt


sql/sql_select.cc:
  Auto merged

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

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

Repair table could crash a server if there is not sufficient
memory (myisam_sort_buffer_size) to operate. Affects not only
repair, but also all statements that use create index by sort:
repair by sort, parallel repair, bulk insert.

Return an error if there is not sufficient memory to store at
least one key per BUFFPEK.

Also fixed memory leak if thr_find_all_keys returns an error.


myisam/sort.c:
  maxbuffer is number of BUFFPEK-s for repair. It is calculated
  as records / keys. keys is number of keys that can be stored
  in memory (myisam_sort_buffer_size). There must be sufficient
  memory to store both BUFFPEK-s and keys. It was checked
  correctly before this patch. However there is another
  requirement that wasn't checked: there must be sufficient
  memory for at least one key per BUFFPEK, otherwise repair
  by sort/parallel repair cannot operate.
  
  Return an error if there is not sufficient memory to store at
  least one key per BUFFPEK.
  
  Also fixed memory leak if thr_find_all_keys returns an error.
mysql-test/r/repair.result:
  A test case for BUG#23175.
mysql-test/t/repair.test:
  A test case for BUG#23175.

into  chilla.local:/home/mydev/mysql-4.1-bug12240


sql/sql_select.cc:
  Auto merged

into  rakia.(none):/home/kgeorge/mysql/autopush/B14019-4.1-opt

into  chilla.local:/home/mydev/mysql-4.1-bug12240

   When resolving unqualified name references MySQL was not
   checking what is the item type for the reference. Thus
   e.g a string literal item that has by convention a name
   equal to its string value will also work as a reference to 
   a SELECT list item or a table field.
   Fixed by allowing only Item_ref or Item_field to referenced by
   (unqualified) name.


mysql-test/r/func_gconcat.result:
  Bug #14019: group by converts literal string to column name
   - removed undeterministic testcase : order by a constant 
     means no order.
mysql-test/r/group_by.result:
  Bug #14019: group by converts literal string to column name
   - test case
mysql-test/t/func_gconcat.test:
  Bug #14019: group by converts literal string to column name
   - removed undeterministic testcase : order by a constant 
     means no order.
mysql-test/t/group_by.test:
  Bug #14019: group by converts literal string to column name
   - test case
sql/sql_base.cc:
  Bug #14019: group by converts literal string to column name
   - resolve unqualified by name refs only for real references

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-4.1-bug9678

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-4.1-bug9678


BitKeeper/deleted/.del-lib_vio.c~d779731a1e391220:
  Use local.
include/violite.h:
  Use local.
sql/net_serv.cc:
  Use local.
vio/viosocket.c:
  Use local.

into  chilla.local:/home/mydev/mysql-4.1-bug8283-one


include/my_sys.h:
  Auto merged

            hangs on Linux

If REPAIR TABLE ... USE_FRM is issued for table that is located in different
than default database server crash could happen.

In reopen_name_locked_table take database name from table_list (user specified
or default database) instead of from thd (default database).

Affects 4.1 only.


mysql-test/r/repair.result:
  A test case for BUG#22562.
mysql-test/t/repair.test:
  A test case for BUG#22562.
sql/sql_base.cc:
  In reopen_name_locked_table take database name from table_list (user specified
  or default database) instead of from thd (default database).

Examined rows are counted for every join part. The per-join-part
counter was incremented over all iterations. The result variable
was replaced at the end of every iteration. The final result was
the number of examined rows by the join part that ended its
execution as the last one. The numbers of other join parts was
lost.

Now we reset the per-join-part counter before every iteration and
add it to the result variable at the end of the iteration. That
way we get the sum of all iterations of all join parts.

No test case. Testing this needs a look into the slow query log.
I don't know of a way to do this portably with the test suite.


sql/sql_select.cc:
  Bug#12240 - Rows Examined in Slow Log showing incorrect number?
  Fixed reseting and accumulation of examined rows counts.

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1

into  mysql.com:/home/bk/MERGE/mysql-4.1-merge

into  chilla.local:/home/mydev/mysql-4.1-bug8283-one


myisam/mi_check.c:
  Auto merged
myisam/mi_packrec.c:
  Auto merged
myisam/sort.c:
  Auto merged
mysql-test/r/myisam.result:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Manual merge
mysql-test/t/myisam.test:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Manual merge

OPTIMIZE TABLE with myisam_repair_threads > 1 performs a non-quick 
parallel repair. This means that it does not only rebuild all 
indexes, but also the data file.

Non-quick parallel repair works so that there is one thread per 
index. The first of the threads rebuilds also the new data file.

The problem was that all threads shared the read io cache on the
old data file. If there were holes (deleted records) in the table,
the first thread skipped them, writing only contiguous, non-deleted
records to the new data file. Then it built the new index so that
its entries pointed to the correct record positions. But the other
threads didn't know the new record positions, but put the positions
from the old data file into the index.

The new design is so that there is a shared io cache which is filled
by the first thread (the data file writer) with the new contiguous
records and read by the other threads. Now they know the new record
positions.

Another problem was that for the parallel repair of compressed
tables a common bit_buff and rec_buff was used. I changed it so
that thread specific buffers are used for parallel repair.

A similar problem existed for checksum calculation. I made this
multi-thread safe too.


include/my_sys.h:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Redesign of io_cache_share.
include/myisam.h:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Redesign of checksum calculation in mi_check.c.
  'calc_checksum' is now in myisamdef.h:st_mi_sort_param.
myisam/mi_check.c:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Implemented a new parallel repair design.
  Using a synchronized shared read/write cache.
  Allowed for thread specific bit_buff, rec_buff, and calc_checksum.
myisam/mi_open.c:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Added DBUG output.
myisam/mi_packrec.c:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Allowed for thread specific bit_buff and rec_buff.
myisam/myisamdef.h:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Commented on checksum calculation variables.
  Allowed for thread specific bit_buff.
  Added DBUG output for better table crash detection.
myisam/sort.c:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Added implications of the new parallel repair design.
  Renamed 'info' -> 'sort_param'.
  Added DBUG output.
mysql-test/r/myisam.result:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Added test results.
mysql-test/t/myisam.test:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Added test cases.
mysys/mf_iocache.c:
  Bug#8283 - OPTIMIZE TABLE causes data loss
  Redesign of io_cache_share.
  We do now allow a writer to synchronize himself with the
  readers of a shared cache. When all threads join in the lock,
  the writer copies the data from his write buffer to the shared
  read buffer.

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

into  mysql.com:/home/svoj/devel/mysql/BUG22937/mysql-4.1-engines

This is addition to fix for bug21617. Valgrind reports an error when
opening merge table that has underlying tables with less indexes than
in a merge table itself.

Copy at most min(file->keys, table->key_parts) elements from rec_per_key array.
This fixes problems when merge table and subtables have different number of keys.


sql/ha_myisammrg.cc:
  Copy at most min(file->keys, table->key_parts) elements from rec_per_key array.
  This fixes problems when merge table and subtables have different number of keys.

into  mysql.com:/home/svoj/devel/mysql/BUG21381/mysql-4.1-engines

Though this is not storage engine specific problem, I was able to
repeat this problem with BDB and NDB engines only. That was the
reason to add a test case into ndb_update.test. As a result
different bad things could happen.

BDB has removed duplicate rows which is not expected.
NDB returns an error.

For multi table update notify storage engine about UPDATE IGNORE
as it is done in single table UPDATE.


mysql-test/r/ndb_update.result:
  A test case for bug#21381.
mysql-test/t/ndb_update.test:
  A test case for bug#21381.
sql/sql_update.cc:
  For multi table update notify storage engine about UPDATE IGNORE
  as it is done in single table UPDATE.

into  mysql.com:/home/gluh/MySQL/Merge/4.1-kt


include/m_ctype.h:
  Auto merged
mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged
sql/table.cc:
  Auto merged
sql/unireg.cc:
  Auto merged

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1-maint


sql/item_func.cc:
  Auto merged

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1-maint