- 19 Oct, 2006 4 commits
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gkodinov@dl145s.mysql.com authored
into dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt
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gkodinov@dl145s.mysql.com authored
into dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt
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gkodinov@dl145s.mysql.com authored
into dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-4.1-opt
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igor@rurik.mysql.com authored
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- 18 Oct, 2006 1 commit
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into mysql.com:/data0/bk/mysql-5.0-kt
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- 17 Oct, 2006 9 commits
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evgen@sunlight.local authored
into sunlight.local:/local_work/14959-bug-5.0-opt-mysql
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evgen@sunlight.local authored
Cleanup of fix for bug#14959.
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igor@rurik.mysql.com authored
into rurik.mysql.com:/home/igor/mysql-5.0-opt
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igor@rurik.mysql.com authored
into rurik.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug19579
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gkodinov/kgeorge@macbook.gmz authored
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gkodinov/kgeorge@macbook.gmz authored
into macbook.gmz:/Users/kgeorge/mysql/work/B21798-5.0-opt-merge
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gkodinov/kgeorge@macbook.gmz authored
list using a function When executing dependent subqueries they are re-inited and re-exec() for each row of the outer context. The cause for the bug is that during subquery reinitialization/re-execution, the optimizer reallocates JOIN::join_tab, JOIN::table in make_simple_join() and the local variable in 'sortorder' in create_sort_index(), which is allocated by make_unireg_sortorder(). Care must be taken not to allocate anything into the thread's memory pool while re-initializing query plan structures between subquery re-executions. All such items mush be cached and reused because the thread's memory pool is freed at the end of the whole query. Note that they must be cached and reused even for queries that are not otherwise cacheable because otherwise it will grow the thread's memory pool every time a cacheable query is re-executed. We provide additional members to the JOIN structure to store references to the items that need to be cached.
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gkodinov/kgeorge@macbook.gmz authored
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gkodinov/kgeorge@macbook.gmz authored
into macbook.gmz:/Users/kgeorge/mysql/work/B22367-5.0-opt-merge
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- 16 Oct, 2006 9 commits
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igor@rurik.mysql.com authored
account predicates that become sargable after reading const tables. In some cases this resulted in choosing non-optimal execution plans. Now info of such potentially saragable predicates is saved in an array and after reading const tables we check whether this predicates has become saragable.
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gkodinov/kgeorge@rakia.(none) authored
into rakia.(none):/home/kgeorge/mysql/autopush/B22342-5.0-opt
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gkodinov/kgeorge@macbook.gmz authored
When using index for group by and range access the server isolates a set of ranges based on the conditions over the key parts of the index used. Then it uses only the ranges over the GROUP BY fields to jump from one group to another. Since the GROUP BY fields may form a prefix over the index, we may use only a prefix of the ranges produced by the range optimizer. Each range contains a notion on whether it includes its border values. The problem is that when using a range prefix, the last range is open because it assumes that there is a range on the next keypart. Thus when we use a prefix range as it is, it excludes all border values. The solution is when ignoring the suffix of the range conditions (to jump over the GROUP BY prefix only) the server must change the remaining intervals so they always contain their borders, e.g. if the whole range was : (1,-inf) <= (<group_by_col>,<min_max_arg_col>) < (1, 3) we must make (1) <= (<group_by_col>) <= (1) because (a,b) < (c1,c2) means : a < c1 OR (a = c1 AND b < c2).
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gkodinov/kgeorge@macbook.gmz authored
strings MySQL is setting the flag HA_END_SPACE_KEYS for all the keys that reference text or varchar columns with collation different than binary. This was done to handle correctly the situation where a lookup on such a key may return more than 1 row because of the presence of many rows that differ only by the amount of trailing space in the table's string column. Inserting such values however appears to violate the unique checks on INSERT/UPDATE. Thus that flag must not be set as it will prevent the optimizer from choosing a faster access method. This fix removes the setting of the HA_END_SPACE_KEYS flag.
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gkodinov/kgeorge@macbook.gmz authored
into macbook.gmz:/Users/kgeorge/mysql/work/B14019-5.0-opt
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gkodinov/kgeorge@macbook.gmz authored
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gkodinov/kgeorge@rakia.(none) authored
into rakia.(none):/home/kgeorge/mysql/autopush/B14019-4.1-opt
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gkodinov/kgeorge@macbook.gmz authored
into macbook.gmz:/Users/kgeorge/mysql/work/B14019-5.0-opt
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gkodinov/kgeorge@macbook.gmz authored
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.
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- 13 Oct, 2006 4 commits
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evgen@moonbone.local authored
The mysql_alter_table() was able to rename only a table. The view/table renaming code is moved from the function rename_tables to the new function called do_rename(). The mysql_alter_table() function calls it when it needs to rename a view.
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kroki/tomash@moonlight.intranet authored
into moonlight.intranet:/home/tomash/src/mysql_ab/mysql-4.1-bug9678
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kroki/tomash@moonlight.intranet authored
into moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.0-real
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kroki/tomash@moonlight.intranet authored
into moonlight.intranet:/home/tomash/src/mysql_ab/mysql-4.1-bug9678
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- 12 Oct, 2006 1 commit
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holyfoot/hf@mysql.com/deer.(none) authored
into mysql.com:/home/hf/mysql-5.0.mrg
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- 11 Oct, 2006 3 commits
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evgen@moonbone.local authored
The Cached_item_decimal::cmp() method wasn't checking for null pointer returned from the val_decimal() of the item being cached. This leads to server crash. The Cached_item_decimal::cmp() method now check for null values.
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msvensson@neptunus.(none) authored
into neptunus.(none):/home/msvensson/mysql/mysql-5.0
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msvensson@neptunus.(none) authored
into neptunus.(none):/home/msvensson/mysql/mysql-4.1
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- 10 Oct, 2006 3 commits
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lars@mysql.com/black.(none) authored
into mysql.com:/home/bk/MERGE/mysql-5.0-merge
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lars@mysql.com/black.(none) authored
into mysql.com:/home/bk/MERGE/mysql-4.1-merge
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joerg@trift2. authored
into trift2.:/MySQL/M50/push-5.0
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- 09 Oct, 2006 2 commits
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gkodinov/kgeorge@macbook.local authored
into macbook.local:/Users/kgeorge/mysql/work/B22781-5.0-opt
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gkodinov/kgeorge@macbook.local authored
Currently SQL_BIG_RESULT is checked only at compile time. However, additional optimizations may take place after this check that change the sort method from 'filesort' to sorting via index. As a result the actual plan executed is not the one specified by the SQL_BIG_RESULT hint. Similarly, there is no such test when executing EXPLAIN, resulting in incorrect output. The patch corrects the problem by testing for SQL_BIG_RESULT both during the explain and execution phases.
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- 08 Oct, 2006 4 commits
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svoj@mysql.com/april.(none) authored
into mysql.com:/home/svoj/devel/mysql/engines/mysql-5.0-engines
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svoj@mysql.com/april.(none) authored
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svoj@may.pils.ru authored
into may.pils.ru:/home/svoj/devel/bk/mysql-5.0-engines
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svoj@may.pils.ru authored
into may.pils.ru:/home/svoj/devel/bk/mysql-4.1-engines
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