1. 23 Jan, 2007 1 commit
    • unknown's avatar
      Merge macbook.gmz:/Users/kgeorge/mysql/work/mysql-5.0-opt · 7b57d401
      unknown authored
      into  macbook.gmz:/Users/kgeorge/mysql/work/merge-5.1-opt
      
      
      mysql-test/r/func_in.result:
        Auto merged
      mysql-test/r/range.result:
        Auto merged
      mysql-test/r/select.result:
        Auto merged
      mysql-test/r/sp-code.result:
        Auto merged
      mysql-test/r/trigger.result:
        Auto merged
      mysql-test/r/udf.result:
        Auto merged
      mysql-test/r/view.result:
        Auto merged
      mysql-test/t/func_in.test:
        Auto merged
      mysql-test/t/func_str.test:
        Auto merged
      mysql-test/t/range.test:
        Auto merged
      mysql-test/t/select.test:
        Auto merged
      mysql-test/t/trigger.test:
        Auto merged
      mysql-test/t/udf.test:
        Auto merged
      sql/item.cc:
        Auto merged
      sql/item.h:
        Auto merged
      sql/item_cmpfunc.cc:
        Auto merged
      sql/item_func.cc:
        Auto merged
      sql/item_strfunc.cc:
        Auto merged
      sql/mysql_priv.h:
        Auto merged
      sql/opt_range.h:
        Auto merged
      sql/sql_base.cc:
        Auto merged
      sql/sql_delete.cc:
        Auto merged
      sql/sql_insert.cc:
        Auto merged
      sql/sql_lex.cc:
        Auto merged
      sql/sql_lex.h:
        Auto merged
      sql/sql_prepare.cc:
        Auto merged
      sql/sql_select.cc:
        Auto merged
      sql/sql_table.cc:
        Auto merged
      sql/sql_union.cc:
        Auto merged
      sql/sql_update.cc:
        Auto merged
      mysql-test/r/func_str.result:
        merge 5.0-opt -> 5.1-opt
      mysql-test/r/group_by.result:
        merge 5.0-opt -> 5.1-opt
      mysql-test/r/insert.result:
        merge 5.0-opt -> 5.1-opt
      mysql-test/r/subselect.result:
        merge 5.0-opt -> 5.1-opt
      mysql-test/t/group_by.test:
        merge 5.0-opt -> 5.1-opt
      mysql-test/t/insert.test:
        merge 5.0-opt -> 5.1-opt
      mysql-test/t/subselect.test:
        merge 5.0-opt -> 5.1-opt
      mysql-test/t/view.test:
        merge 5.0-opt -> 5.1-opt
      sql/item_cmpfunc.h:
        merge 5.0-opt -> 5.1-opt
      sql/item_strfunc.h:
        merge 5.0-opt -> 5.1-opt
      7b57d401
  2. 22 Jan, 2007 5 commits
    • unknown's avatar
      sql_select.cc: · 0ede0dd7
      unknown authored
        Code cleanup after fix for bug#23417.
      
      
      sql/sql_select.cc:
        Code cleanup after fix for bug#23417.
      0ede0dd7
    • unknown's avatar
      sql_prepare.cc: · c5ad4bbb
      unknown authored
        Post fix for bug#25123.
      
      
      sql/sql_prepare.cc:
        Post fix for bug#25123.
      c5ad4bbb
    • unknown's avatar
      Bug#25123: ON DUPLICATE KEY clause allows fields not from the insert table. · 6ca17a20
      unknown authored
      When inserting into a join-based view the update fields from the ON DUPLICATE
      KEY UPDATE wasn't checked to be from the table being inserted into and were
      silently ignored.
      
      The new check_view_single_update() function is added to check that
      insert/update fields are being from the same single table of the view.
      
      
      sql/sql_insert.cc:
        Bug#25123: ON DUPLICATE KEY clause allows fields not from the insert table.
        The new check_view_single_update() function is added to check that
        insert/update fields are being from the same single table of the view.
      mysql-test/r/insert.result:
        Added a test case for bug#25123: ON DUPLICATE KEY clause allows fields not from the insert table.
      mysql-test/t/insert.test:
        Added a test case for bug#25123: ON DUPLICATE KEY clause allows fields not from the insert table.
      6ca17a20
    • unknown's avatar
      Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.1-opt · 734c118d
      unknown authored
      into  rakia.gmz:/home/kgeorge/mysql/autopush/B16590-5.1-opt
      
      
      mysql-test/r/order_by.result:
        Auto merged
      mysql-test/t/order_by.test:
        Auto merged
      sql/sql_select.cc:
        Auto merged
      734c118d
    • unknown's avatar
      BUG#16590: Optimized does not do right "const" table pre-read · 82bfd109
      unknown authored
       st_table::const_key_parts member is used in determining if
       certain key has a prefix that is compared to constant(s) in
       the query predicates.
       If there's such prefix the index can be used to get the data
       from the remaining suffix columns in sorted order.
       However if a field is compared to another field from a "const"
       table the const_key_parts is not amended.
       This makes the optimizer unable to detect that the key can be 
       used for sorting and adds an extra filesort.
       Fixed by updating const_key_parts after reading in the "const"
       table.
      
      
      mysql-test/r/order_by.result:
        BUG#16590: Optimized does not do right "const" table pre-read
         - test case
      mysql-test/t/order_by.test:
        BUG#16590: Optimized does not do right "const" table pre-read
         - test case
      sql/sql_select.cc:
        BUG#16590: Optimized does not do right "const" table pre-read
         - fill up the const_key_parts structure
      82bfd109
  3. 19 Jan, 2007 6 commits
    • unknown's avatar
      Merge olga.mysql.com:/home/igor/mysql-5.0-opt · aadd3c04
      unknown authored
      into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug25580
      
      aadd3c04
    • unknown's avatar
      Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-5.0-opt · 2f59c3e7
      unknown authored
      into  moonbone.local:/work/25172-bug-5.0-opt-mysql
      
      2f59c3e7
    • unknown's avatar
      Merge olga.mysql.com:/home/igor/mysql-5.0-opt · b851e340
      unknown authored
      into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug25580
      
      
      mysql-test/r/subselect.result:
        Auto merged
      b851e340
    • unknown's avatar
      Merge olga.mysql.com:/home/igor/mysql-5.0-opt · 4df1a24b
      unknown authored
      into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug25580
      
      4df1a24b
    • unknown's avatar
      Bug#25172: Not checked buffer size leads to a server crash. · 4e588859
      unknown authored
      After fix for bug#21798 JOIN stores the pointer to the buffer for sorting
      fields. It is used while sorting for grouping and for ordering. If ORDER BY
      clause has more elements then the GROUP BY clause then a memory overrun occurs.
      
      Now the length of the ORDER BY list is always passed to the 
      make_unireg_sortorder() function and it allocates buffer big enough to be
      used for bigger list.
      
      
      sql/sql_delete.cc:
        Bug#25172: Not checked buffer size leads to a server crash.
        Length parameter is initialized to 0 for the make_unireg_sortorder() function.
      sql/sql_select.cc:
        Bug#25172: Not checked buffer size leads to a server crash.
        Now the length of the ORDER BY list is always passed to the 
        make_unireg_sortorder() function and it allocates buffer big enough to be
        used for bigger list.
      sql/sql_table.cc:
        Bug#25172: Not checked buffer size leads to a server crash.
        Length parameter is initialized to 0 for the make_unireg_sortorder() function.
      sql/sql_update.cc:
        Bug#25172: Not checked buffer size leads to a server crash.
        Length parameter is initialized to 0 for the make_unireg_sortorder() function.
      mysql-test/r/select.result:
        Added a test case for bug#25172: Not checked buffer size leads to a server crash.
      mysql-test/t/select.test:
        Added a test case for bug#25172: Not checked buffer size leads to a server crash.
      4e588859
    • unknown's avatar
      Fixed bug #25219: crash for a query that contains an EXIST subquery with · da5a6981
      unknown authored
      UNION over correlated and uncorrelated SELECTS.
      In such subqueries each uncorrelated SELECT should be considered as
      uncacheable. Otherwise join_free is called for it and in many cases
      it causes some problems.
      
      
      mysql-test/r/subselect.result:
        Added a test case for bug #25219.
      mysql-test/t/subselect.test:
        Added a test case for bug #25219.
      sql/mysql_priv.h:
        Fixed bug #25219: crash for a query that contains an EXIST subquery with
        UNION over correlated and uncorrelated SELECTS.
        In such subqueries each uncorrelated SELECT should be considered as
        uncacheable. Otherwise join_free is called for it and in many cases
        it causes some problems. 
        Added a new flag UNCACHEABLE_UNITED for such SELECTs.
      sql/sql_lex.cc:
        Fixed bug #25219: crash for a query that contains an EXIST subquery with
        UNION over correlated and uncorrelated SELECTS.
        In such subqueries each uncorrelated SELECT should be considered as
        uncacheable. Otherwise join_free is called for it and in many cases
        it causes some problems.
        Added a new flag UNCACHEABLE_UNITED for such SELECTs.
      da5a6981
  4. 18 Jan, 2007 3 commits
    • unknown's avatar
      Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt · 38c46032
      unknown authored
      into  rakia.gmz:/home/kgeorge/mysql/autopush/B25382-5.0-opt
      
      38c46032
    • unknown's avatar
      Bug #25382: Passing NULL to an UDF called from stored procedures · ec746212
      unknown authored
       crashes server
       Check for null value is reliable only after calling some of the 
       val_xxx() methods. If the val_xxx() method is not called
       the null_value flag will be set only for certain types of NULL
       values (like SQL constant NULLs for example).
       This caused a crash while trying to dereference a NULL pointer
       that is returned by val_str() for NULL values.
       Fixed by swapping the order of val_xxx() and null_value check.
      
      
      mysql-test/r/udf.result:
        Bug #25382: Passing NULL to an UDF called from stored procedures 
         crashes server
         - test case
      mysql-test/t/udf.test:
        Bug #25382: Passing NULL to an UDF called from stored procedures 
         crashes server
         - test case
      sql/item_func.cc:
        Bug #25382: Passing NULL to an UDF called from stored procedures 
         crashes server
         - reliably check null_value
      ec746212
    • unknown's avatar
      Fixed bug #25580: incorrect stored representations of views in cases · 192eb05b
      unknown authored
      when they contain the '!' operator.
      Added an implementation for the method Item_func_not::print. 
      The method encloses any NOT expression into extra parentheses to avoid
      incorrect stored representations of views that use the '!' operators.
      Without this change when a view was created that contained
      the expression !0*5  its stored representation contained not this
      expression but rather the expression not(0)*5 . 
      The operator '!' is of a higher precedence than '*', while NOT is 
      of a lower precedence than '*'. That's why the expression !0*5 
      is interpreted as not(0)*5, while the expression not(0)*5 is interpreted
      as not((0)*5) unless sql_mode is set to HIGH_NOT_PRECEDENCE.
      Now we translate !0*5 into (not(0))*5. 
      
      
      mysql-test/r/sp-code.result:
        Adjusted results after the fix of bug 25580.
      mysql-test/r/subselect.result:
        Adjusted results after the fix of bug 25580.
      mysql-test/r/view.result:
        Added a test case for bug #25580.
      mysql-test/t/view.test:
        Added a test case for bug #25580.
      sql/item_cmpfunc.cc:
        Fixed bug #25580: incorrect stored representations of views in cases
        when they contain the '!' operator.
        Added an implementation for the method Item_func_not::print. 
        The method encloses the NOT expression into extra parenthesis to avoid
        incorrect stored representations of views that use the '!' operators.
      sql/item_cmpfunc.h:
        Fixed bug #25580: incorrect stored representations of views in cases
        when they contain the '!' operator.
        Added an implementation for the method Item_func_not::print. 
        The method encloses the NOT expression into extra parenthesis to avoid
        incorrect stored representations of views that use the '!' operators.
      192eb05b
  5. 15 Jan, 2007 8 commits
    • unknown's avatar
    • unknown's avatar
      Merge ibabaev@bk-internal.mysql.com:/home/bk/mysql-5.0-opt · ce8a54af
      unknown authored
      into  olga.mysql.com:/home/igor/mysql-5.0-opt
      
      ce8a54af
    • unknown's avatar
      Merge ibabaev@bk-internal.mysql.com:/home/bk/mysql-5.0-opt · 6059e2be
      unknown authored
      into  olga.mysql.com:/home/igor/mysql-5.0-opt
      
      6059e2be
    • unknown's avatar
      sql_select.cc: · 401e2225
      unknown authored
        Fix for crashes on 64bit platforms after fixing bug#23417.
      
      
      sql/sql_select.cc:
        Fix for crashes on 64bit platforms after fixing bug#23417.
      401e2225
    • unknown's avatar
      Merge olga.mysql.com:/home/igor/mysql-4.1-opt · 26a91315
      unknown authored
      into  olga.mysql.com:/home/igor/mysql-5.0-opt
      
      
      mysql-test/r/range.result:
        Auto merged
      mysql-test/t/range.test:
        Auto merged
      sql/opt_range.h:
        Manual merge.
      26a91315
    • unknown's avatar
      Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt · ca93aa17
      unknown authored
      into  rakia.gmz:/home/kgeorge/mysql/autopush/B20420-5.0-opt
      
      
      sql/item_cmpfunc.h:
        Auto merged
      ca93aa17
    • unknown's avatar
      BUG#20420: optimizer reports wrong keys on left join with IN · c3ba0dc6
      unknown authored
       The optimizer needs to evaluate whether predicates are better
       evaluated using an index. IN is one such predicate.
       To qualify an IN predicate must involve a field of the index
       on the left and constant arguments on the right.
       However whether an expression is a constant can be determined only
       by knowing the preceding tables in the join order. 
       Assuming that only IN predicates with expressions on the right that
       are constant for the whole query qualify limits the scope of 
       possible optimizations of the IN predicate (more specifically it
       doesn't allow the "Range checked for each record" optimization for
       such an IN predicate.
       Fixed by not pre-determining the optimizability of the IN predicate
       in the case when all right IN operands are not SQL constant expressions
      
      
      mysql-test/r/func_in.result:
        BUG#20420: optimizer reports wrong keys on left join with IN
         - test case
      mysql-test/t/func_in.test:
        BUG#20420: optimizer reports wrong keys on left join with IN
         - test case
      sql/item_cmpfunc.h:
        BUG#20420: optimizer reports wrong keys on left join with IN
         - cannot decide on the optimizability of a function without
           knowing the tables before it in the join order
      c3ba0dc6
    • unknown's avatar
      Bug#21713 incorrect value for the REFERENTIAL_CONSTRAINTS.UNIQUE_CONSTRAINT_NAME column · 362ad4da
      unknown authored
      added new field 'REFERENCED_TABLE_NAME' to 'referential_constraints' table
      field 'UNIQUE_CONSTRAINT_NAME' contains the name of the referenced index
      
      
      mysql-test/r/information_schema_inno.result:
        result fix
      mysql-test/t/information_schema_inno.test:
        test fix
      sql/sql_show.cc:
        added new field 'REFERENCED_TABLE_NAME' to 'referential_constraints' table
        field 'UNIQUE_CONSTRAINT_NAME' contains the name of the referenced index
      sql/table.h:
        added 'referenced_key_name' member to 'st_foreign_key_info' struct
      storage/innobase/handler/ha_innodb.cc:
        added the filling of referenced key name
      362ad4da
  6. 14 Jan, 2007 1 commit
  7. 13 Jan, 2007 1 commit
    • unknown's avatar
      Fixed bug #24776: an assertion abort in handler::ha_index_init · fd72879e
      unknown authored
      for queries using 'range checked for each record'.
      The problem was fixed in 5.0 by the patch for bug 12291.
      This patch down-ported the corresponding code from 5.0 into 
      QUICK_SELECT::init() and added a new test case. 
      
      
      mysql-test/r/range.result:
        Added a test case for bug #24776.
      mysql-test/t/range.test:
        Added a test case for bug #24776.
      sql/opt_range.h:
        Fixed bug #24776: an assertion abort in handler::ha_index_init
        for queries using 'range checked for each record'.
        The problem was fixed in 5.0 by the patch for bug 12291.
        The patch for 4.1 down-ported the corresponding code from 5.0 into 
        QUICK_SELECT::init().
      fd72879e
  8. 12 Jan, 2007 11 commits
    • unknown's avatar
      Merge ibabaev@bk-internal.mysql.com:/home/bk/mysql-5.0-opt · a97f12a4
      unknown authored
      into  olga.mysql.com:/home/igor/mysql-5.0-opt
      
      a97f12a4
    • unknown's avatar
      Fixed bug #25398: crash in a trigger when using trigger fields · c7c6e78e
      unknown authored
      in a select list.
      The objects of the Item_trigger_field class inherited the implementations
      of the methods copy_or_same, get_tmp_table_item and get_tmp_table_field
      from the class Item_field while they rather should have used the default
      implementations defined for the base class Item.
      It could cause catastrophic problems for triggers that used SELECTs
      with select list containing trigger fields such as NEW.<table column>
      under DISTINCT.
      
      
      mysql-test/r/trigger.result:
        Added a test case for bug #25398.
      mysql-test/t/trigger.test:
        Added a test case for bug #25398.
      c7c6e78e
    • unknown's avatar
      func_str.result: · fb40276d
      unknown authored
        After merge fix
      
      
      mysql-test/r/func_str.result:
        After merge fix
      fb40276d
    • unknown's avatar
      Merge moonbone.local:/work/latest-4.1-opt-mysql · be85e8af
      unknown authored
      into  moonbone.local:/work/latest-5.0-opt-mysql
      
      
      mysql-test/t/func_str.test:
        Auto merged
      sql/item_strfunc.cc:
        Auto merged
      sql/item_strfunc.h:
        Auto merged
      sql/sql_delete.cc:
        Auto merged
      mysql-test/r/delete.result:
        Manual merge
      mysql-test/r/func_str.result:
        Manual merge
      mysql-test/t/delete.test:
        Manual merge
      be85e8af
    • unknown's avatar
      bug #24186 (nested query across partitions returns fewer records) · e12d0da3
      unknown authored
      Subselect's engine checks table->status field to determine if the
      record was properly found when we use keyread upon the table.
      Partition engine checks all the partitions for given key
      before return. So if matching record was found in the first
      partition and no matching records were found in the second, 
      we have table->status == NOT_FOUND after the function, what
      makes subselects to skip matching records.
      The patch adds table->status= 0 if we actually found something.
      
      
      mysql-test/r/partition.result:
        result fixed
      mysql-test/t/partition.test:
        testcase
      sql/ha_partition.cc:
        table->status set to 0 if we found something in previous partitions
      e12d0da3
    • unknown's avatar
      Merge mysql.com:/home/gluh/MySQL/Merge/5.0 · df17609c
      unknown authored
      into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt
      
      
      sql/mysqld.cc:
        Auto merged
      df17609c
    • unknown's avatar
      Merge mysql.com:/home/gluh/MySQL/Merge/5.0-opt · 39d39734
      unknown authored
      into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt
      
      
      mysql-test/r/order_by.result:
        Auto merged
      mysql-test/t/order_by.test:
        Auto merged
      sql/item.cc:
        Auto merged
      sql/mysqld.cc:
        Auto merged
      sql/sql_base.cc:
        Auto merged
      mysql-test/r/join.result:
        manual merge
      mysql-test/t/join.test:
        manual merge
      39d39734
    • unknown's avatar
      Merge mysql.com:/home/gluh/MySQL/Merge/5.1 · 32d6754e
      unknown authored
      into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt
      
      
      sql/mysqld.cc:
        Auto merged
      storage/innobase/handler/ha_innodb.cc:
        Auto merged
      32d6754e
    • unknown's avatar
      Merge mysql.com:/home/gluh/MySQL/Merge/4.1 · 7ecd5479
      unknown authored
      into  mysql.com:/home/gluh/MySQL/Merge/5.0
      
      7ecd5479
    • unknown's avatar
      Merge mysql.com:/home/gluh/MySQL/Merge/5.0-opt · af9f9778
      unknown authored
      into  mysql.com:/home/gluh/MySQL/Merge/5.0
      
      
      sql/mysqld.cc:
        Auto merged
      af9f9778
    • unknown's avatar
      Function mysql_rm_tmp_tables(): · 91cfbda7
      unknown authored
      fixed valgrind error
      fixed indentation
      
      91cfbda7
  9. 11 Jan, 2007 4 commits
    • unknown's avatar
      Merge mjorgensen@bk-internal.mysql.com:/home/bk/mysql-5.0 · 799f1aba
      unknown authored
      into  tiger.mmj.dk:/Users/mmj/bktrees/mysql-5.1-build
      
      
      configure.in:
        Auto merged
      mysql-test/install_test_db.sh:
        Auto merged
      BitKeeper/deleted/.del-CMakeLists.txt~3:
        Auto merged
      BitKeeper/deleted/.del-configure.js:
        Auto merged
      mysql-test/mysql-test-run.pl:
        Auto merged
      scripts/mysql_install_db.sh:
        Auto merged
      sql/mysqld.cc:
        Auto merged
      799f1aba
    • unknown's avatar
      Merge siva.hindu.god:/home/tsmith/m/bk/mysql-5.0-build · ea72c946
      unknown authored
      into  siva.hindu.god:/home/tsmith/m/bk/mysql-5.1-build
      
      
      BitKeeper/deleted/.del-CMakeLists.txt~3:
        Auto merged
      BitKeeper/deleted/.del-README~1:
        Auto merged
      BitKeeper/deleted/.del-configure.js:
        Auto merged
      BitKeeper/deleted/.del-mysql_test_run_new.c~a23ab2c4b28b25ad:
        Auto merged
      mysql-test/mysql-test-run.pl:
        Auto merged
      scripts/mysql_install_db.sh:
        Auto merged
      configure.in:
        Manual merge
      mysql-test/install_test_db.sh:
        Manual merge
      sql/mysqld.cc:
        Manual merge
      ea72c946
    • unknown's avatar
      Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-5.0-opt · 86e771b2
      unknown authored
      into  moonbone.local:/work/23417-bug-5.0-opt-mysql
      
      
      sql/sql_base.cc:
        Auto merged
      86e771b2
    • unknown's avatar
      Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode. · 2dfff25e
      unknown authored
      Currently in the ONLY_FULL_GROUP_BY mode no hidden fields are allowed in the
      select list. To ensure this each expression in the select list is checked
      to be a constant, an aggregate function or to occur in the GROUP BY list.
      The last two requirements are wrong and doesn't allow valid expressions like
      "MAX(b) - MIN(b)" or "a + 1" in a query with grouping by a.
      
      The correct check implemented by the patch will ensure that:
      any field reference in the [sub]expressions of the select list 
        is under an aggregate function or
        is mentioned as member of the group list or
        is an outer reference or
        is part of the select list element that coincide with a grouping element.
      
      The Item_field objects now can contain the position of the select list
      expression which they belong to. The position is saved during the
      field's Item_field::fix_fields() call.
      
      The non_agg_fields list for non-aggregated fields is added to the SELECT_LEX
      class. The SELECT_LEX::cur_pos_in_select_list now contains the position in the
      select list of the expression being currently fixed.
      
      
      sql/item.cc:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        The Item_field objects now contain the position of the select list
        expression which they belong to. The position is saved at the field's
        Item_field::fix_fields() call.
      sql/item.h:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        The Item_field objects now can store the position in the select list of the
        expression to which they are belongs to.
      sql/mysql_priv.h:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        Added the UNDEF_POS constant.
      sql/sql_base.cc:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        Now the setup_fields() function maintains the cur_pos_in_select_list variable.
      sql/sql_lex.cc:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        Set the cur_pos_in_select_list variable and the non_agg_fields list to their initial state.
      sql/sql_lex.h:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        The non_agg_fields list for non-aggregated fields is added to the SELECT_LEX
        class. The SELECT_LEX::cur_pos_in_select_list now stores the position in the
        select list of the expression being currently fixed.
      sql/sql_select.cc:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        Each select now keeps the list of fields that aren't
        used under any aggregate function. If an expression from the select list
        isn't found in the GROUP BY list the setup_group() function additionally
        checks whether non-aggregated fields occur in that expression.
        If there at least one such field and it isn't found in the GROUP BY list
        then an error is thrown.
      sql/sql_union.cc:
        Bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
        Clean up of the non_agg_fields list.
      mysql-test/r/group_by.result:
        Added a test case for the bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
      mysql-test/t/group_by.test:
        Added a test case for the bug#23417: Too strict checks against GROUP BY in the ONLY_FULL_GROUP_BY mode.
      2dfff25e