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Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-4.1-opt

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into  rakia.(none):/home/kgeorge/mysql/autopush/B21019-4.1-opt


sql/sql_select.cc:
  Auto merged
mysql-test/r/select.result:
  SCCS merged
mysql-test/t/select.test:
  SCCS merged
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2006-07-26 18:49:26 +03:00
parent 03fc0a8fb1 5ca1ee5eea
commit 70d27b3503
3 changed files with 46 additions and 2 deletions
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7
sql/sql_select.cc
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@ -2161,8 +2161,11 @@ merge_key_fields(KEY_FIELD *start,KEY_FIELD *new_fields,KEY_FIELD *end,
/* field = expression OR field IS NULL */
old->level= and_level;
old->optimize= KEY_OPTIMIZE_REF_OR_NULL;
/* Remember the NOT NULL value */
if (old->val->is_null())
/*
Remember the NOT NULL value unless the value does not depend
on other tables.
*/
if (!old->val->used_tables() && old->val->is_null())
old->val= new_fields->val;
/* The referred expression can be NULL: */
old->null_rejecting= 0;