- Apply Eric Bergen's patch: in join_read_always_key(), move ha_index_init() call
  to before the late NULLs filtering code.
- Backport function comments from 6.0.


mysql-test/r/null_key.result:
  BUG#34945: "ref_or_null queries that are null_rejecting and have a null value crash mysql"
  - Testcase
mysql-test/t/null_key.test:
  BUG#34945: "ref_or_null queries that are null_rejecting and have a null value crash mysql"
  - Testcase
sql/sql_select.cc:
  BUG#34945: "ref_or_null queries that are null_rejecting and have a null value crash mysql"
  - Apply Eric Bergen's patch: in join_read_always_key(), move ha_index_init() call
    to before the late NULLs filtering code.
  - Backport function comments from 6.0

into  host.loc:/home/uchum/work/5.0-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt


mysql-test/t/symlink.test:
  Auto merged
mysql-test/r/symlink.result:
  after merge fix

mysql-test/r/symlink.result:
  result fix

                  and Item_direct_ref constructor calls.

Order of ref->field_name and ref->table_name arguments
is of Item_ref and Item_direct_ref in the fix_inner_refs
function is inverted.


sql/sql_select.cc:
  Fixed bug #34830: mixed table and field names in Item_ref
                    and Item_direct_ref constructor calls.
  
  Order of ref->field_name and ref->table_name arguments
  is of Item_ref and Item_direct_ref in the fix_inner_refs
  function is inverted. See definitions:
  
    Item_ref(Name_resolution_context *context_arg, Item **item,
             const char *table_name_arg, const char *field_name_arg,
             bool alias_name_used_arg= FALSE)
    and
  
    Item_direct_ref(Name_resolution_context *context_arg, Item **item,
                    const char *table_name_arg,
                    const char *field_name_arg,
                    bool alias_name_used_arg= FALSE)

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt


sql/mysql_priv.h:
  Auto merged
mysql-test/r/symlink.result:
  manual merge
mysql-test/t/symlink.test:
  manual merge
sql/mysqld.cc:
  manual merge
sql/sql_parse.cc:
  manual merge

added new function test_if_data_home_dir() which checks that
path does not contain mysql data home directory.
Using of mysql data home directory in
DATA DIRECTORY & INDEX DIRECTORY is disallowed.


mysql-test/r/symlink.result:
  test result
mysql-test/t/symlink.test:
  test case
sql/mysql_priv.h:
  new variable mysql_unpacked_real_data_home
sql/mysqld.cc:
  new variable mysql_unpacked_real_data_home
sql/sql_parse.cc:
  added new function test_if_data_home_dir() which checks that
  path does not contain mysql data home directory.
  Using of mysql data home directory in
  DATA DIRECTORY & INDEX DIRECTORY is disallowed.

into  host.loc:/home/uchum/work/5.0-opt

                  Assertion `0' failed

If ROW item is a part of an expression that also has
aggregate function calls (COUNT/SUM/AVG...), a
"splitting" with an Item::split_sum_func2 function
is applied to that ROW item.
Current implementation of Item::split_sum_func2
replaces this Item_row with a newly created
Item_aggregate_ref reference to it.
Then the row cache tries to work with the
Item_aggregate_ref object as with the Item_row object:
row cache calls row-emulation methods such as cols and
element_index. Item_aggregate_ref (like it's parent
Item_ref) inherits dummy implementations of those
methods from the hierarchy root Item, and call to
them leads to failed assertions and wrong data
output.

Row-emulation virtual functions (cols, element_index, addr,
check_cols, null_inside and bring_value) of Item_ref have
been overloaded to forward calls to an underlying item
reference.




mysql-test/r/row.result:
  Added test case for bug #34620.
mysql-test/t/row.test:
  Added test case for bug #34620.
sql/item.h:
  Fixed bug #34620.
  Row-emulation virtual functions (cols, element_index, addr,
  check_cols, null_inside and bring_value) of Item_ref have
  been overloaded to forward calls to an underlying item
  reference.

into  magare.gmz:/home/kgeorge/mysql/autopush/B34747-5.0-opt

Was a double-free of the Unique member of Item_func_group_concat.
This was not causing a crash because the Unique is a descendent of
Sql_alloc.
Fixed to free the Unique only if it was allocated for the instance 
of Item_func_group_concat it was referenced from


mysql-test/r/func_gconcat.result:
  Bug #34747: test case
mysql-test/t/func_gconcat.test:
  Bug #34747: test case
sql/item_sum.cc:
  Bug #34747: free the Unique only if it was allocated
  for this instance of Item_func_group_concat

into  kaamos.(none):/data/src/opt/mysql-5.0-opt

the patch for bug #33834.

into  mysql.com:/home/hf/work/25097/my50-25097


libmysql/libmysql.c:
  Auto merged
libmysqld/lib_sql.cc:
  Auto merged
sql/log.cc:
  Auto merged

There was no way to return an error from the client library
if no MYSQL connections was established.
So here i added variables to store that king of errors and
made functions like mysql_error(NULL) to return these.


client/mysql.cc:
  Bug #25097 mysql_server_init fails silently if no errmsg.sys is present.
  
  Show the error message on std_error
include/sql_common.h:
  Bug #25097 mysql_server_init fails silently if no errmsg.sys is present.
  
  cant_connect_sqlstate constant declared
libmysql/libmysql.c:
  Bug #25097 mysql_server_init fails silently if no errmsg.sys is present.
  
  mysql_sqlstate(NULL) returns 'unknown_sqlstate'
libmysqld/lib_sql.cc:
  Bug #25097 mysql_server_init fails silently if no errmsg.sys is present.
  
  EMBEDDED_SERVER version of the vprint_msg_to_log() implemented
sql-common/client.c:
  Bug #25097 mysql_server_init fails silently if no errmsg.sys is present.
  
  mysql_server_last_errno and mysql_server_last_error introduced
  to store errors not related to particular connections.
  
  mysql_error(NULL) and mysql_errno(NULL) now returns these
  mysql_server_last_error and errno respectively
sql/log.cc:
  Bug #25097 mysql_server_init fails silently if no errmsg.sys is present.
  
  EMBEDDED_LIBRARY implementation of the vprint_msg_to_log() moved
  to lib_sql.cc

into  kaamos.(none):/data/src/opt/mysql-5.0-opt


sql/sql_yacc.yy:
  Auto merged

                    documentation

While the manual mentions FRAC_SECOND only for the TIMESTAMPADD()
function, it was also possible to use FRAC_SECOND with DATE_ADD(),
DATE_SUB() and +/- INTERVAL.

Fixed the parser to match the manual, i.e. using FRAC_SECOND for 
anything other than TIMESTAMPADD()/TIMESTAMPDIFF() now produces a 
syntax error.

Additionally, the patch allows MICROSECOND to be used in TIMESTAMPADD/
TIMESTAMPDIFF and marks FRAC_SECOND as deprecated.


mysql-test/r/func_time.result:
  Added a test case for bug #33834.
mysql-test/t/func_time.test:
  Added a test case for bug #33834.
sql/sql_yacc.yy:
  Reject FRAC_SECOND for anything other than TIMESTAMPADD() or
  TIMESTAMPDIFF().
  Allow MICROSECOND to be used with TIMESTAMPADD()/TIMESTAMPDIFF().
  Warn about FRAC_SECOND being a deprecated unit.

into  kaamos.(none):/data/src/opt/mysql-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B30604-5.0-opt

into  mysql.com:/home/gluh/MySQL/mysql-5.0-opt

                    suite)

Under some circumstances a combination of aggregate functions and
GROUP BY in a SELECT query over a VIEW could lead to incorrect
calculation of the result type of the aggregate function. This in
turn could result in incorrect results, or assertion failures on debug
builds.

Fixed by changing the logic in Item_sum_hybrid::fix_fields() so that
the argument's item is dereferenced before calling its type() method.


mysql-test/r/view.result:
  Added a test case for bug #33049.
mysql-test/t/view.test:
  Added a test case for bug #33049.
sql/item_sum.cc:
  When calculating the result type of an aggregate function, dereference
  the argument's item before calling its type() method.

skip lock_type update for temporary tables


mysql-test/r/tablelock.result:
  test result
mysql-test/t/tablelock.test:
  test case
sql/sql_base.cc:
  skip lock_type update for temporary tables

into  moonbone.local:/work/33266-bug-5.0-opt-mysql

The test case for the bug#31048 checks that there is no crash on stack
overrun. But due to different stack sizes on different platforms it failed
on some of them.

The new test case check that a query with at least 4 level subquery nesting
works without the stack overrun nesting and other levels of nesting doesn't
cause a crash.


mysql-test/t/subselect.test:
  Corrected test case for the bug#31048.
mysql-test/r/subselect.result:
  Corrected test case for the bug#31048.

  and ps-protocol
Finding a routine should be a transparent operation as 
far as the binary log is concerned.
But it was influencing the binary log because of the TIMESTAMP
column in the proc table.

Fixed by preserving and restoring the time_zone usage flag when
searching for a stored routine in the proc table.


mysql-test/r/binlog_innodb.result:
  Bug #30604: test case
mysql-test/r/ctype_cp932_binlog.result:
  Bug #30604: updated test results (a procedure call before that)
mysql-test/t/binlog_innodb.test:
  Bug #30604: test case
sql/sp.cc:
  Bug #30604: finding a routine should be a transparent operation as 
  far as the binary log is concerned.
  Fixed by preserving and restoring the time_zone usage flag.

into  mysql.com:/home/hf/work/32942/my50-32942


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

into  kaamos.(none):/data/src/opt/mysql-5.0-opt


sql/item.cc:
  Auto merged

Problem is not about intervals and doesn't actually cause 'full table scan'.
We have an optimization for DISTINCT when we have
'DISTINCT field_from_first_join_table' we don't need to read all the
rows from the JOIN-ed table if we found one conforming row.
It stopped working in 5.0 as we return NESTED_LOOP_OK if we came upon
that case in the evaluate_join_record() and that doesn't break the
recordreading loop in sub_select().

Fixed by returning NESTED_LOOP_NO_MORE_ROWS in this case.


mysql-test/r/select.result:
  Bug #32942 now() - interval '7200' second is NOT pre-calculated, causing "full table scan".
  
  test result
mysql-test/t/select.test:
  Bug #32942 now() - interval '7200' second is NOT pre-calculated, causing "full table scan"
  
  test case
sql/sql_select.cc:
  Bug #32942 now() - interval '7200' second NOT pre-calculated, causing "full table scan"
  
  return NESTED_LOOP_NO_MORE_ROWS when we don't need to read rows from
  this table anymore

into  kaamos.(none):/data/src/opt/mysql-5.0-opt

into  kaamos.(none):/data/src/opt/mysql-5.0-opt


mysql-test/r/variables.result:
  Auto merged
mysql-test/t/variables.test:
  Auto merged
sql/item.cc:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
mysql-test/r/sp.result:
  Manual merge.
mysql-test/t/sp.test:
  Manual merge.

into  kaamos.(none):/data/src/opt/mysql-4.1-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B31887-5.0-opt


sql/item.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged

when executed in version 5

Zero fill is a field attribute only. So we can't always 
propagate  constants for zerofill fields : the values and 
expression results don't have that flag.

Fixed by converting the const value to a string and 
using that in const propagation when the context allows it. 
Disable const propagation for fields with ZEROFILL flag in
all the other cases.


mysql-test/r/compare.result:
  Bug #31887: test case
mysql-test/t/compare.test:
  Bug #31887: test case
sql/item.cc:
  Bug #31887: If the context allows conversion
  of an int constant to a zero-filled string constant
  put the string constant instead of the int constant
  when doing const propagation
sql/mysql_priv.h:
  Bug #31887: a macro to get all the Field_num
  descendant fields.

into  kaamos.(none):/data/src/opt/mysql-5.0-opt

into  host.loc:/home/uchum/work/5.0-opt

                 for wildcard values.
The server ignored escape character before wildcards during
the calculation of priority values for sorting of a privilege
list. (Actually the server counted an escape character as an
ordinary wildcard like % or _). I.e. the table name template
with a wildcard character like 'tbl_1' had higher priority in
a privilege list than concrete table name without wildcards
like 'tbl\_1', and some privileges of 'tbl\_1' was hidden
by privileges for 'tbl_1'.

The get_sort function has been modified to ignore escaped
wildcards as usual.



mysql-test/r/grant3.result:
  Added test case for bug#31194.
mysql-test/t/grant3.test:
  Added test case for bug#31194.
sql/sql_acl.cc:
  Fixed bug#31194.
  The server used the wild_prefix escape character (usually \-character)
  like % and _ wildcards in the get_sort function for sorting weights
  calculation.
  
  The get_sort function has been modified to ignore escaped wildcards
  and alone escapes like in the wild_case_compare function.

                 type conversion.

Instead of copying of whole character string from a temporary
buffer, the server copied a short-living pointer to that string
into a long-living structure. That has been fixed.


mysql-test/r/select.result:
  Added test case for bug#33764.
mysql-test/t/select.test:
  Added test case for bug#33764.
sql/item_cmpfunc.cc:
  Fixed bug#33764.
  Copying of a pointer has been replaced with an optional copying of
  a whole array to a newly allocated memory space in case of a
  functional source item.