1. 02 Dec, 2007 1 commit
    • unknown's avatar
      Merge tnurnberg@bk-internal.mysql.com:/home/bk/mysql-5.1-opt · e617ba3f
      unknown authored
      into  mysql.com:/misc/mysql/31177/51-31177
      
      
      client/mysql.cc:
        Auto merged
      mysql-test/r/index_merge_myisam.result:
        Auto merged
      mysql-test/r/innodb_mysql.result:
        Auto merged
      mysql-test/r/ps.result:
        Auto merged
      mysql-test/r/subselect.result:
        Auto merged
      mysql-test/r/type_bit.result:
        Auto merged
      mysql-test/t/variables.test:
        Auto merged
      sql/mysql_priv.h:
        Auto merged
      sql/mysqld.cc:
        Auto merged
      sql/set_var.cc:
        Auto merged
      sql/sql_plugin.cc:
        Auto merged
      e617ba3f
  2. 01 Dec, 2007 6 commits
    • unknown's avatar
      Bug#31177: Server variables can't be set to their current values · 549abb44
      unknown authored
      5.1+ specific fixes (plugins etc.)
      
      
      include/my_getopt.h:
        make both ull and ll global
      mysql-test/r/index_merge_myisam.result:
        we throw warnings to the client, yea, verily
      mysql-test/r/innodb.result:
        we throw warnings to the client, yea, verily
      mysql-test/r/variables.result:
        we throw warnings to the client, yea, verily
      mysql-test/t/variables.test:
        correct result, is multiple of variable's block_size now
      mysys/my_getopt.c:
        export getopt_ll_limit_value(), check for integer wrap-around
        in it, same as in ull variant.  Only print warnings to reporter
        when caller didn't ask for diagnostics, otherwise assume caller
        will handle any warnings (id est, throw them client-wards)
      sql/mysqld.cc:
        correct signedness of "concurrent-insert"
      sql/sql_plugin.cc:
        Throw sys-var out-of-range warnings client-wards for
        plugins, too.
      549abb44
    • unknown's avatar
      Merge mysql.com:/misc/mysql/31177/50-31177 · ae789bd6
      unknown authored
      into  mysql.com:/misc/mysql/31177/51-31177
      
      
      include/m_string.h:
        Auto merged
      include/my_getopt.h:
        Auto merged
      mysql-test/r/delayed.result:
        Auto merged
      mysql-test/r/innodb.result:
        Auto merged
      mysql-test/r/innodb_mysql.result:
        Auto merged
      mysql-test/r/key_cache.result:
        Auto merged
      mysql-test/r/ps.result:
        Auto merged
      mysql-test/r/type_bit.result:
        Auto merged
      mysql-test/r/type_bit_innodb.result:
        Auto merged
      mysql-test/t/variables.test:
        Auto merged
      sql/mysql_priv.h:
        Auto merged
      BitKeeper/deleted/.del-index_merge.result:
        Auto merged
      sql/set_var.cc:
        Auto merged
      mysql-test/r/variables.result:
        manual merge
      client/mysql.cc:
        manual merge
      client/mysqltest.c:
        manual merge
      mysql-test/r/subselect.result:
        manual merge
      mysys/my_getopt.c:
        manual merge
      sql/mysqld.cc:
        manual merge
      ae789bd6
    • unknown's avatar
      Merge tnurnberg@bk-internal.mysql.com:/home/bk/mysql-5.1-opt · 31b601b8
      unknown authored
      into  mysql.com:/misc/mysql/32707/51-32707
      
      
      sql/protocol.cc:
        Auto merged
      31b601b8
    • unknown's avatar
      Merge bk@192.168.21.1:mysql-5.1-opt · 978757a8
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my51-mrg
      
      978757a8
    • unknown's avatar
      merging · 98d7aa32
      unknown authored
      98d7aa32
    • unknown's avatar
      Merge tnurnberg@bk-internal.mysql.com:/home/bk/mysql-5.1-opt · 6f6ad7ad
      unknown authored
      into  mysql.com:/misc/mysql/32180/51-32180
      
      6f6ad7ad
  3. 30 Nov, 2007 15 commits
    • unknown's avatar
      Merge mysql.com:/home/hf/work/mrg/my50-mrg · b492cb09
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my51-mrg
      
      
      sql/mysqld.cc:
        Auto merged
      sql/protocol.cc:
        Auto merged
      storage/federated/ha_federated.cc:
        Auto merged
      tests/mysql_client_test.c:
        Auto merged
      include/mysql_com.h:
        merging
      libmysqld/lib_sql.cc:
        merging
      mysql-test/r/federated.result:
        merging
      mysql-test/t/federated.test:
        merging
      storage/federated/ha_federated.h:
        mergin
      b492cb09
    • unknown's avatar
      Merge mysql.com:/home/hf/work/mrg/my41-mrg · 31549fa8
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my50-mrg
      
      
      include/mysql_com.h:
        Auto merged
      sql/mysqld.cc:
        Auto merged
      31549fa8
    • unknown's avatar
      Merge mysql.com:/home/hf/work/32624/my50-32624 · 46be75f8
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my50-mrg
      
      46be75f8
    • unknown's avatar
      Merge mysql.com:/home/hf/work/32374/my50-32374 · b7c0474b
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my50-mrg
      
      b7c0474b
    • unknown's avatar
      Merge mysql.com:/home/hf/work/31890/my51-31890 · 9f20f559
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my51-mrg
      
      
      mysql-test/r/partition.result:
        SCCS merged
      mysql-test/t/partition.test:
        merging
      9f20f559
    • unknown's avatar
      Merge mysql.com:/home/hf/work/30430/my51-30430 · 4034fd11
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my51-mrg
      
      4034fd11
    • unknown's avatar
      Bug #30430 crash:./mtr --embedded-server --ps-protocol cache_innodb func_misc... · 8c18a8d0
      unknown authored
      PS-protocol data is stored in different format - the MYSQL_RECORDS->data
      contains the link to the record content, not to array of the links to
      the field's contents. So we have to handle it separately for
      embedded-server query cache.
      
      
      libmysqld/emb_qcache.cc:
        Bug #30430 crash:./mtr --embedded-server --ps-protocol cache_innodb func_misc...
        
        ps_protocol data now stored in it's particular way.
      libmysqld/emb_qcache.h:
        Bug #30430 crash:./mtr --embedded-server --ps-protocol cache_innodb func_misc...
        
        Querycache_stream::load_char/store_char  ->
          load_uchar/store_uchar
      mysql-test/r/func_misc.result:
        Bug #30430 crash:./mtr --embedded-server --ps-protocol cache_innodb func_misc...
        
        test result
      mysql-test/t/func_misc.test:
        Bug #30430 crash:./mtr --embedded-server --ps-protocol cache_innodb func_misc...
        
        the test uses t2 table, so let's make sure it doesn't exist befor the start
      8c18a8d0
    • unknown's avatar
      Merge mysql.com:/home/hf/work/31900/my41-31900 · ffb2c59c
      unknown authored
      into  mysql.com:/home/hf/work/mrg/my41-mrg
      
      ffb2c59c
    • unknown's avatar
      Merge polly.(none):/home/kaa/src/opt/bug9481/my51-bug9481 · d31817dd
      unknown authored
      into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt
      
      
      sql/sql_class.h:
        Auto merged
      sql/sql_insert.cc:
        Auto merged
      tests/mysql_client_test.c:
        Auto merged
      d31817dd
    • unknown's avatar
      Merge polly.(none):/home/kaa/src/opt/bug9481/my50-bug9481 · 59b32666
      unknown authored
      into  polly.(none):/home/kaa/src/opt/bug9481/my51-bug9481
      
      
      sql/sql_class.h:
        Null merge.
      sql/sql_insert.cc:
        Null merge.
      tests/mysql_client_test.c:
        Null merge.
      59b32666
    • unknown's avatar
      Bug#32775 problems with SHOW EVENTS and Information_Schema · 93a1bac5
      unknown authored
      removed unnecessary privilege checks for I_S schema
      
      
      mysql-test/r/information_schema.result:
        test result
      mysql-test/t/information_schema.test:
        test case
      sql/events.cc:
        There is no events in I_S so we don't need to execute check_access here.
      sql/sql_parse.cc:
        removed unnecessary check
      93a1bac5
    • unknown's avatar
      Bug #32374 crash with filesort when selecting from federated table and view. · 17b47894
      unknown authored
      filesort() uses file->estimate_rows_upper_bound() call to allocate
      internal buffers. If this function returns a value smaller than
      a number of row that will be returned later in find_all_keys(),
      that can cause server crash.
      Fixed by implementing ha_federated::estimate_rows_upper_bound() to
      return maximum possible number of rows.
      Present estimation for FEDERATED always returns 0 if the linked to the VIEW.
      
      
      mysql-test/r/federated.result:
        Bug #32374 crash with filesort when selecting from federated table and view.
        
        test result
      mysql-test/t/federated.test:
        Bug #32374 crash with filesort when selecting from federated table and view.
        
        test case
      sql/ha_federated.cc:
        Bug #32374 crash with filesort when selecting from federated table and view.
        
        ha_federated::estimate_rows_upper_bound() implemented
      sql/ha_federated.h:
        Bug #32374 crash with filesort when selecting from federated table and view.
        
        ha_federated::estimate_rows_upper_bound() interface
      17b47894
    • unknown's avatar
      Merge mysql.com:/misc/mysql/32707/50-32707 · ebb51b92
      unknown authored
      into  mysql.com:/misc/mysql/32707/51-32707
      
      
      sql/protocol.cc:
        manual merge
      ebb51b92
    • unknown's avatar
      Merge mysql.com:/misc/mysql/32707/41-32707 · fcec20ee
      unknown authored
      into  mysql.com:/misc/mysql/32707/50-32707
      
      
      sql/protocol.cc:
        manual merge
      fcec20ee
    • unknown's avatar
      Bug#31177: Server variables can't be set to their current values · a7ff6e90
      unknown authored
      Default values of variables were not subject to upper/lower bounds
      and step, while setting variables was. Bounds and step are also
      applied to defaults now; defaults are corrected quietly, values
      given by the user are corrected, and a correction-warning is thrown
      as needed. Lastly, very large values could wrap around, starting
      from 0 again. They are bounded at the maximum value for the
      respective data-type now if no lower maximum is specified in the
      variable's definition.
      
      
      client/mysql.cc:
        correct maxima in options array
      client/mysqltest.c:
        adjust minimum for "sleep" option so default value is no longer
        out of bounds.
      include/m_string.h:
        ullstr() - the unsigned brother of llstr()
      include/my_getopt.h:
        Flag if we bounded the value (that is, correct anything aside from
        making value a multiple of block-size)
      mysql-test/r/delayed.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/index_merge.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/innodb.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/innodb_mysql.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/key_cache.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/packet.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/ps.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/subselect.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/type_bit.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/type_bit_innodb.result:
        We throw a warning now when we adjust out of range parameters.
      mysql-test/r/variables.result:
        correct results: bounds and step apply to variables' default values, too
      mysql-test/t/variables.test:
        correct results: bounds and step apply to variables' default values, too
      mysys/my_getopt.c:
        - apply bounds/step to default values of variables (based on work by serg)
        - print complaints about incorrect values for variables (truncation etc.,
          by requestion of consulting)
        - if no lower maximum is specified in variable definition, bound unsigned
          values at their maximum to prevent wrap-around
        - some calls to error_reporter had a \n, some didn't. remove \n from calls,
          let reporter-function handle it, so the default reporter behaves like that
          in mysqld
      sql/mysql_priv.h:
        correct RANGE_ALLOC_BLOCK_SIZE (cleared with monty)
      sql/mysqld.cc:
        correct maxima to correct data-type.
        correct minima where higher than default.
        correct range-alloc-block-size.
        correct inno variables so GET_* corresponds to actual variable's type.
      sql/set_var.cc:
        When the new value for a variable is out of bounds, we'll send the
        client a warning (but not if the value was simply not a multiple of
        'blocksize').  sys_var_thd_ulong had this, sys_var_long_ptr_global
        didn't; broken out and streamlined to avoid duplication of code.
      strings/llstr.c:
        ullstr() - the unsigned brother of llstr()
      a7ff6e90
  4. 29 Nov, 2007 2 commits
    • unknown's avatar
      Bug #29085 A small double precision number becomes zero. · a8dada1e
      unknown authored
      Denormalized DOUBLE-s can't be properly handled by old MIPS processors.
      So we need to enable specific mode for them so IRIX will do use
      software round to handle such numbers. 
      
      
      sql/mysqld.cc:
        Bug #29085 A small double precision number becomes zero.
        
        reset_floating_point_exeption() renamed as set_proper_floating_point_mode()
        #ifdef __sgi code added to enable denormalized DOUBLE-s on IRIX
      a8dada1e
    • unknown's avatar
      Bug #32624 Error with multi queries in MySQL embedded server 5.1.22. · 084c93b5
      unknown authored
      server status wasn't properly sent to the client after the error
      by the embedded server. Wasn't noticed before as one usually stopped
      retrieving results after he gets an error.
      
      
      libmysqld/lib_sql.cc:
        Bug #32624 Error with multi queries in MySQL embedded server 5.1.22.
        
        server status transferred to the client after errors
      sql/protocol.cc:
        Bug #32624 Error with multi queries in MySQL embedded server 5.1.22.
        
        set server status before net_send_error_packet() call as this
        function sends it to the client in the embedded server
      tests/mysql_client_test.c:
        Bug #32624 Error with multi queries in MySQL embedded server 5.1.22.
        
        testcase added
      084c93b5
  5. 28 Nov, 2007 3 commits
    • unknown's avatar
      Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-5.1-opt · 1c9b1fb9
      unknown authored
      into  mysql.com:/home/psergey/mysql-5.1-bug32772
      
      1c9b1fb9
    • unknown's avatar
      Bug#25629 CREATE TABLE LIKE does not work with INFORMATION_SCHEMA · 0cff138e
      unknown authored
      added new func mysql_create_like_schema_frm() which creates frm file based on I_S table
      
      
      mysql-test/r/create.result:
        test result
      mysql-test/t/create.test:
        test case
      sql/sql_table.cc:
        added new func mysql_create_like_schema_frm() which creates frm file based on I_S table
      0cff138e
    • unknown's avatar
      BUG#32772: partition crash 1: enum column · c3236b14
      unknown authored
      The bug was that for ordered index scans, ha_partition::index_init() did
      not put index columns into table->read_set if the underlying storage 
      engine did not have HA_PARTIAL_COLUMN_READ flag. 
      This was causing assertion failure when handle_ordered_index_scan() tried
      to sort the records according to index order.
      
      Fixed by making ha_partition::index_init() put index columns into table->read_set
      for all ordered scans. 
      
      
      mysql-test/r/partition.result:
        BUG#32772: partition crash 1: enum column
        - Testcase
      mysql-test/t/partition.test:
        BUG#32772: partition crash 1: enum column
        - Testcase
      sql/ha_partition.cc:
        BUG#32772: partition crash 1: enum column
        - Make ha_partition::index_init() include index columns in the read_set
          whenever an ordered scan is initialized, no matter if
          HA_PARTIAL_COLUMN_READ is set or not.
      c3236b14
  6. 27 Nov, 2007 3 commits
    • unknown's avatar
      Bug#32707: misdimensioned buffer in protocol layer · cace6c96
      unknown authored
      Miscalculation in protocol-layer: size buffer correctly so
      even really long error messages cannot overflow our buffer.
      
      
      sql/protocol.cc:
        size buffer correctly so really long error messages cannot overflow it.
      cace6c96
    • unknown's avatar
      Merge magare.gmz:/home/kgeorge/mysql/work/B30355-5.0-opt · c4d220f1
      unknown authored
      into  magare.gmz:/home/kgeorge/mysql/work/B30355-5.1-opt
      
      
      include/mysql_com.h:
        Auto merged
      mysql-test/r/udf.result:
        Auto merged
      mysql-test/t/udf.test:
        Auto merged
      sql/item_func.cc:
        Auto merged
      sql/item_func.h:
        Auto merged
      sql/udf_example.c:
        Auto merged
      c4d220f1
    • unknown's avatar
      Bug #30355: Incorrect ordering of UDF results · 56973f1b
      unknown authored
      There's currently no way of knowing the determinicity of an UDF.
      And the optimizer and the sequence() UDFs were making wrong
      assumptions about what the is_const member means.
      Plus there was no implementation of update_system_tables()
      causing the optimizer to overwrite the information returned by
      the <udf>_init function.
      
      Fixed by equating the assumptions about the semantics of 
      is_const and providing a implementation of update_used_tables().
      Added a TODO item for the UDF API change needed to make a better 
      implementation.
      
      
      include/mysql_com.h:
        Bug #30355: comment added
      mysql-test/r/udf.result:
        Bug #30355: test case
      mysql-test/t/udf.test:
        Bug #30355: test case
      sql/item_func.cc:
        Bug #30355: keep const_item_cache and used_tables_cache in sync
      sql/item_func.h:
        Bug #30355: 
         - a better implementation of update_used_tables()
         - keep const_item_cache and used_tables_cache in sync
      sql/udf_example.c:
        Bug #30355: Wrong value for const_item fixed.
      56973f1b
  7. 26 Nov, 2007 10 commits
    • unknown's avatar
      Many files: · 2f6fad10
      unknown authored
        Test case for the bug#31048 is moved to the subselect_notembedded tests as the embedded server isn't affected by this bug.
      
      
      mysql-test/r/subselect.result:
        Test case for the bug#31048 is moved to the subselect_notembedded tests as the embedded server isn't affected by this bug.
      mysql-test/r/subselect_notembedded.result:
        Test case for the bug#31048 is moved to the subselect_notembedded tests as the embedded server isn't affected by this bug.
      mysql-test/t/subselect.test:
        Test case for the bug#31048 is moved to the subselect_notembedded tests as the embedded server isn't affected by this bug.
      mysql-test/t/subselect_notembedded.test:
        Test case for the bug#31048 is moved to the subselect_notembedded tests as the embedded server isn't affected by this bug.
      2f6fad10
    • unknown's avatar
      Merge polly.(none):/home/kaa/src/opt/bug28837/my51-bug29131 · e4ef3714
      unknown authored
      into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt
      
      
      storage/myisam/ha_myisam.cc:
        Auto merged
      mysql-test/r/merge.result:
        Manual merge.
      mysql-test/r/myisam.result:
        Manual merge.
      mysql-test/t/merge.test:
        Manual merge.
      mysql-test/t/myisam.test:
        Manual merge.
      e4ef3714
    • unknown's avatar
      Merge polly.(none):/home/kaa/src/opt/bug28837/my50-bug29131 · 2d850823
      unknown authored
      into  polly.(none):/home/kaa/src/opt/bug28837/my51-bug29131
      
      
      mysql-test/r/merge.result:
        Auto merged
      mysql-test/t/merge.test:
        Auto merged
      mysql-test/r/myisam.result:
        Manual merge.
      mysql-test/t/myisam.test:
        Manual merge.
      storage/myisam/ha_myisam.cc:
        Manual merge.
      storage/myisammrg/ha_myisammrg.cc:
        Manual merge.
      2d850823
    • unknown's avatar
      Fix for bug #28837: MyISAM storage engine error (134) doing delete with · 60a1e86c
      unknown authored
      self-join
      
      When doing DELETE with self-join on a MyISAM or MERGE table, it could
      happen that a record being retrieved in join_read_next_same() has
      already been deleted by previous iterations. That caused the engine's
      index_next_same() method to fail with HA_ERR_RECORD_DELETED error and
      the whole DELETE query to be aborted with an error.
      
      Fixed by suppressing the HA_ERR_RECORD_DELETED error in
      hy_myisam::index_next_same() and ha_myisammrg::index_next_same(). Since
      HA_ERR_RECORD_DELETED can only be returned by MyISAM, there is no point
      in filtering this error in the SQL layer.
      
      
      mysql-test/r/merge.result:
        Added a test case for bug #28837.
      mysql-test/r/myisam.result:
        Added a test case for bug #28837.
      mysql-test/t/merge.test:
        Added a test case for bug #28837.
      mysql-test/t/myisam.test:
        Added a test case for bug #28837.
      sql/ha_myisam.cc:
        Skip HA_ERR_RECORD_DELETED silently when calling mi_rnext_same().
      sql/ha_myisammrg.cc:
        Skip HA_ERR_RECORD_DELETED silently when calling mi_rnext_same().
      60a1e86c
    • unknown's avatar
      5.0 version of the fix for bug #9481: mysql_insert_id() returns 0 after · fe9bccc3
      unknown authored
      insert ... select.
      
      The 5.0 manual page for mysql_insert_id() does not mention anything
      about INSERT ... SELECT, though its current behavior is incosistent
      with what the manual says about the plain INSERT.
      
      Fixed by changing the AUTO_INCREMENT and mysql_insert_id() handling
      logic in INSERT ... SELECT to be consistent with the INSERT behavior,
      the manual, and the changes in 5.1 introduced by WL3146:
      
      
      - mysql_insert_id() now returns the first automatically generated
      AUTO_INCREMENT value that was successfully inserted by INSERT ... SELECT
      
      -  if an INSERT ... SELECT statement is executed, and no automatically
      generated value is successfully inserted, mysql_insert_id() now returns
      the ID of the last inserted row.
      
      
      sql/sql_class.h:
        Replaced last_insert_id with autoinc_value_of_last_inserted_row to be
        consistent with 5.1 code.
      sql/sql_insert.cc:
        Revised the AUTO_INCREMENT and mysql_insert_id() handling logic in
        INSERT ... SELECT to be consistent with INSERT behavior, the manual, and
        changes in 5.1 introduced by WL3146:
        
        - mysql_insert_id() now returns the first automatically generated
        AUTO_INCREMENT value that was successfully inserted;
        
        -  if an INSERT ... SELECT statement is executed, and no automatically
        generated value is successfully inserted, mysql_insert_id() now returns
        the ID of the last inserted row.
      tests/mysql_client_test.c:
        Backported the test cases related to INSERT ... SELECT and
        mysql_insert_id() from WL3146 patch to 5.0.
      fe9bccc3
    • unknown's avatar
      merge of 5.0-opt to 5.1-opt · 06ed00f7
      unknown authored
      06ed00f7
    • unknown's avatar
      Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.1-opt · 41e55c53
      unknown authored
      into  magare.gmz:/home/kgeorge/mysql/autopush/B32036-5.1-opt
      
      41e55c53
    • unknown's avatar
      Bug #31900 Wrong confusing comment in mysql_com.h header file. · 31f78be2
      unknown authored
      comment fixed as we truly need const_item to be 1 to mark
      constant function
      
      
      include/mysql_com.h:
        Bug #31900 Wrong confusing comment in mysql_com.h header file.
        
        comment fixed
      31f78be2
    • unknown's avatar
      Merge magare.gmz:/home/kgeorge/mysql/work/B32036-5.0-opt · 2f20ff21
      unknown authored
      into  magare.gmz:/home/kgeorge/mysql/work/B32036-5.1-opt
      
      
      mysql-test/r/subselect.result:
        merged fix for bug 32036 to 5.1-opt
      mysql-test/t/subselect.test:
        merged fix for bug 32036 to 5.1-opt
      sql/sql_yacc.yy:
        merged fix for bug 32036 to 5.1-opt
      2f20ff21
    • unknown's avatar
      Bug #32036: EXISTS within a WHERE clause with a UNION · 3315addf
      unknown authored
        crashes MySQL 5.122
      There was a difference in how UNIONs are handled
      on top level and when in sub-query.
      Because the rules for sub-queries were syntactically
      allowing cases that are not currently supported by
      the server we had crashes (this bug) or wrong results
      (bug 32051).
      Fixed by making the syntax rules for UNIONs match the 
      ones at top level.
      
      These rules however do not support nesting UNIONs, e.g.
      (SELECT a FROM t1 UNION ALL SELECT b FROM t2) 
       UNION
      (SELECT c FROM t3 UNION ALL SELECT d FROM t4)
      Supports for statements with nested UNIONs will be
      added in a future version.
      
      
      mysql-test/r/subselect.result:
        Bug #32036: test case
      mysql-test/t/subselect.test:
        Bug #32036: test case
      sql/sql_yacc.yy:
        Bug #32036: Make the syntax rules for UNIONs in subqueries the same
        as for top level UNIONs.
      3315addf