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Author SHA1 Message Date
sergefp@mysql.com
c3f46e1f26 BUG#24127: (a,b) IN (SELECT c,d ...) can produce wrong results if a and/or b are NULLs: 
- Make the code produce correct result: use an array of triggers to turn on/off equalities for each
  compared column. Also turn on/off optimizations based on those equalities.
- Make EXPLAIN output show "Full scan on NULL key" for tables for which we switch between
  ref/unique_subquery/index_subquery and ALL access.
- index_subquery engine now has HAVING clause when it is needed, and it is
  displayed in EXPLAIN EXTENDED
- Fix incorrect presense of "Using index" for index/unique-based subqueries (BUG#22930)
// bk trigger note: this commit refers to BUG#24127
 2007-01-12 23:22:41 +03:00
gkodinov/kgeorge@macbook.gmz
609befda87 Merge macbook.gmz:/Users/kgeorge/mysql/work/B20792-4.1-opt 
into  macbook.gmz:/Users/kgeorge/mysql/work/B20792-5.0-opt
 2006-07-26 19:23:44 +03:00
gkodinov/kgeorge@macbook.gmz
565d495997 * Bug #20792: Incorrect results from aggregate subquery 
When processing aggregate functions all tables values are reset
to NULLs at the end of each group. 
When doing that if there are no rows found for a group
the const tables must not be reset as they are not recalculated 
by do_select()/sub_select() for each group.
 2006-07-26 19:19:30 +03:00
lars@mysql.com
af951aa662 After merge fixes 2005-10-10 19:38:58 +02:00
lars@mysql.com
57f36732ca Merge mysql.com:/users/lthalmann/bkroot/mysql-4.1 
into  mysql.com:/users/lthalmann/bk/mysql-5.0
 2005-10-10 17:50:19 +02:00
ramil@mysql.com
fcc51afb6a Populate t1 in order to get more predictable explain results. 2005-10-07 20:14:34 +05:00
monty@mishka.local
f16c7b3c5c After merge fixes 2005-08-25 09:38:06 +03:00
monty@mishka.local
f384e08277 Merge mishka.local:/home/my/mysql-4.1 
into  mishka.local:/home/my/mysql-5.0
 2005-08-25 06:55:48 +03:00
heikki@hundin.mysql.fi
4bedb3091c subselect2.result: 
Update test result to reflect the fix of Bug #12779 : EXPLAIN SELECT of a subquery is now different
 2005-08-24 18:05:54 +03:00
heikki@hundin.mysql.fi
dacb591222 subselect2.result: 
Update key lengths in EXPLAIN to reflect true VARCHARs
 2005-03-16 15:26:07 +02:00
serg@serg.mylan
9de748d1d3 results fixed after merge 2004-07-20 11:00:10 +02:00
bell@sanja.is.com.ua
947e6e00f8 after merge changes 2004-03-21 16:39:14 +02:00
antony@ltantony.rdg.cyberkinetica.homeunix.net
fcf96dbb18 WorkLog#1323 
Deprecate the use of TYPE=... Preferred syntax is ENGINE=
 2003-12-10 04:31:42 +00:00
bell@sanja.is.com.ua
46b8c3ea8b renamed join_types (as was suggested by Peter Gulutzan) 2003-09-14 09:40:57 +03:00
bell@sanja.is.com.ua
7e10dada05 test of big subquery 2003-07-08 11:03:30 +03:00