1. 14 Jul, 2006 1 commit
  2. 12 Jul, 2006 2 commits
    • unknown's avatar
      Bug #17212 results not sorted correctly by ORDER BY when using index · 41445430
      unknown authored
        * don't use join cache when the incoming data set is already ordered
          for ORDER BY
          This choice must be made because join cache will effectively
          reverse the join order and the results will be sorted by the index
          of the table that uses join cache.
      
      
      mysql-test/r/innodb_mysql.result:
        Bug #17212 results not sorted correctly by ORDER BY when using index
          * Test suite for the bug
      mysql-test/t/innodb_mysql.test:
        Bug #17212 results not sorted correctly by ORDER BY when using index
          * Test suite for the bug
      sql/sql_select.cc:
        Bug #17212 results not sorted correctly by ORDER BY when using index
          * don't use join cache when the incoming data set is already sorted
      41445430
    • unknown's avatar
      Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.1-opt · e2c448fb
      unknown authored
      into  moonbone.local:/work/16302-bug-4.1-opt-mysql
      
      
      mysql-test/r/subselect.result:
        SCCS merged
      mysql-test/t/subselect.test:
        SCCS merged
      e2c448fb
  3. 11 Jul, 2006 4 commits
    • unknown's avatar
      Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.1-opt · 03dbc219
      unknown authored
      into  moonbone.local:/work/18503-bug-4.1-mysql
      
      
      sql/sql_select.cc:
        Auto merged
      03dbc219
    • unknown's avatar
      Fixed bug#18503: Queries with a quantified subquery returning empty set · d2bbf288
      unknown authored
      may return a wrong result.
      
      An Item_sum_hybrid object has the was_values flag which indicates whether any
      values were added to the sum function. By default it is set to true and reset
      to false on any no_rows_in_result() call. This method is called only in
      return_zero_rows() function. An ALL/ANY subquery can be optimized by MIN/MAX
      optimization. The was_values flag is used to indicate whether the subquery
      has returned at least one row. This bug occurs because return_zero_rows() is
      called only when we know that the select will return zero rows before
      starting any scans but often such information is not known.
      In the reported case the return_zero_rows() function is not called and
      the was_values flag is not reset to false and yet the subquery return no rows
      Item_func_not_all and Item_func_nop_all functions return a wrong
      comparison result.
      
      The end_send_group() function now calls no_rows_in_result() for each item
      in the fields_list if there is no rows were found for the (sub)query.
      
      
      mysql-test/t/subselect.test:
        Added test case for bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
      mysql-test/r/subselect.result:
        Added test case for bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
      sql/sql_select.cc:
        Fixed bug#18503: Queries with a quantified subquery returning empty set may return a wrong result.
        
        The end_send_group() function now calls no_rows_in_result() for each item
        in the fields_list if there is no matching rows were found.
      d2bbf288
    • unknown's avatar
      Merge moonbone.local:/work/allany-4.1-mysql · bf01313c
      unknown authored
      into  moonbone.local:/work/16302-bug-4.1-opt-mysql
      
      
      bf01313c
    • unknown's avatar
      Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.1-opt · 7642d181
      unknown authored
      into  moonbone.local:/home/evgen/bk-trees/mysql-4.1-opt
      
      
      sql/sql_class.cc:
        Auto merged
      sql/sql_class.h:
        Auto merged
      7642d181
  4. 10 Jul, 2006 4 commits
    • unknown's avatar
      Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.1-opt · 7bea031d
      unknown authored
      into  moonbone.local:/work/allany-4.1-mysql
      
      
      7bea031d
    • unknown's avatar
      Fixed bug#16302: Quantified subquery without any tables gives wrong results · ad88eabd
      unknown authored
      The ALL/ANY subqueries are the subject of MIN/MAX optimization. The matter
      of this optimization is to embed MIN() or MAX() function into the subquery
      in order to get only one row by which we can tell whether the expression
      with ALL/ANY subquery is true or false.
      But when it is applied to a subquery like 'select a_constant' the reported bug
      occurs. As no tables are specified in the subquery the do_select() function 
      isn't called for the optimized subquery and thus no values have been added 
      to a MIN()/MAX() function and it returns NULL instead of a_constant.
      This leads to a wrong query result.
      
      For the subquery like 'select a_constant' there is no reason to apply
      MIN/MAX optimization because the subquery anyway will return at most one row.
      Thus the Item_maxmin_subselect class is more appropriate for handling such
      subqueries.
      
      The Item_in_subselect::single_value_transformer() function now checks
      whether tables are specified for the subquery. If no then this subselect is
      handled like a UNION using an Item_maxmin_subselect object.
      
      
      mysql-test/t/subselect.test:
        Added test case for bug#16302: Quantified subquery without any tables gives wrong results
      mysql-test/r/subselect.result:
        Added test case for bug#16302: Quantified subquery without any tables gives wrong results
      sql/item_subselect.cc:
        Fixed bug#16302: Quantified subquery without any tables gives wrong results
         
        The Item_in_subselect::single_value_transformer() function now checks
        whether tables are specified for the subquery. If no then this subselect is
        handled like a UNION using an Item_maxmin_subselect object.
      ad88eabd
    • unknown's avatar
      Merge rakia:mysql/4.1/B14553 · ca1e4aab
      unknown authored
      into  macbook.gmz:/Users/kgeorge/mysql/work/B14553-4.1-opt
      
      
      sql/sql_class.cc:
        SCCS merged
      sql/sql_select.cc:
        SCCS merged
      ca1e4aab
    • unknown's avatar
      BUG#14553: NULL in WHERE resets LAST_INSERT_ID · 0806d9a8
      unknown authored
      To make MySQL compatible with some ODBC applications, you can find
      the AUTO_INCREMENT value for the last inserted row with the following query:
       SELECT * FROM tbl_name WHERE auto_col IS NULL.
      This is done with a special code that replaces 'auto_col IS NULL' with
      'auto_col = LAST_INSERT_ID'.
      However this also resets the LAST_INSERT_ID to 0 as it uses it for a flag
      so as to ensure that only the first SELECT ... WHERE auto_col IS NULL
      after an INSERT has this special behaviour.
      In order to avoid resetting the LAST_INSERT_ID a special flag is introduced
      in the THD class. This flag is used to restrict the second and subsequent
      SELECTs instead of LAST_INSERT_ID.
      
      
      mysql-test/r/odbc.result:
        test suite for the bug
      mysql-test/r/rpl_insert_id.result:
        test for the fix in replication
      mysql-test/t/odbc.test:
        test suite for the bug
      mysql-test/t/rpl_insert_id.test:
        test for the fix in replication
      sql/sql_class.cc:
        initialize the flag
      sql/sql_class.h:
        flag's declaration and set code when setting the last_insert_id
      sql/sql_select.cc:
        the special flag is used instead of last_insert_id
      0806d9a8
  5. 06 Jul, 2006 2 commits
    • unknown's avatar
      Merge ibabaev@bk-internal.mysql.com:/home/bk/mysql-4.1-opt · 8cb368bc
      unknown authored
      into  olga.mysql.com:/home/igor/mysql-4.1-opt
      
      
      8cb368bc
    • unknown's avatar
      Fixed bug #18243. · cf7627bc
      unknown authored
      The implementation of the method Item_func_reverse::val_str
      for the REVERSE function modified the argument of the function.
      This led to wrong results for expressions that contained
      REVERSE(ref) if ref occurred somewhere else in the expressions.
      
      
      mysql-test/r/func_str.result:
        Added a test case for bug #18243.
      mysql-test/t/func_str.test:
        Added a test case for bug #18243.
      sql/item_strfunc.cc:
        Fixed bug #18243.
        The implementation of the method Item_func_reverse::val_str
        for the REVERSE function modified the argument of the function.
        This led to wrong results for expressions that contained
        REVERSE(ref) if ref occurred somewhere else in the expressions.
        
        The implementation of Item_func_reverse::val_str has been changed
        to make the argument intact.
      sql/item_strfunc.h:
        Fixed bug #18243.
        Added tmp_value to the Item_func_reverse class to store
        the result of the function. It erroneously replaced the 
        argument before this fix.
      cf7627bc
  6. 05 Jul, 2006 1 commit
  7. 04 Jul, 2006 2 commits
    • unknown's avatar
      WL#2928 Date Translation NRE · 184ff212
      unknown authored
      (implemented by by Josh Chamas)
      
      
      libmysqld/Makefile.am:
        Adding new source file
      mysql-test/r/date_formats.result:
        Adding test case
      mysql-test/t/date_formats.test:
        Adding test case
      sql/Makefile.am:
        Adding new source file
      BitKeeper/etc/ignore:
        Added libmysqld/sql_locale.cc to the ignore list
      sql/item_timefunc.cc:
        Using current locale data, instead of hard coded English names.
      sql/mysql_priv.h:
        Adding new type MY_LOCALE, and declaring new global variables.
      sql/set_var.cc:
        Adding "lc_time_names" system variable.
      sql/set_var.h:
        Adding "lc_time_names" system variable.
      sql/sql_cache.cc:
        Adding lc_time_names as a query cache flag.
      sql/sql_class.cc:
        Setting default locale to en_US
      sql/sql_class.h:
        Adding locale variable into system_variables.
      sql/sql_locale.cc:
        Adding new file with locale data for various languages
      184ff212
    • unknown's avatar
      Better comments for void Item::top_level_item() · 1401c2c7
      unknown authored
      1401c2c7
  8. 30 Jun, 2006 14 commits
  9. 29 Jun, 2006 9 commits
  10. 28 Jun, 2006 1 commit
    • unknown's avatar
      gcc 4.1 linux warning fixes backported from 5.0. · 730d1661
      unknown authored
      
      sql/item_cmpfunc.h:
        gcc 4.1 linux warning fixes backported from 5.0
      sql/opt_range.cc:
        gcc 4.1 linux warning fixes.
      sql/spatial.h:
        gcc 4.1 linux warning fixes backported from 5.0
      sql/sql_select.h:
        gcc 4.1 linux warning fixes.
      sql/sql_update.cc:
        gcc 4.1 linux warning fixes.
      730d1661