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Merge mysql.com:/home/my/mysql-4.1

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into  mysql.com:/home/my/mysql-5.0
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monty@mysql.com
2005-10-13 20:18:37 +03:00
parent 1436494a72 829a4831b1
commit 6f5baa1eba
5 changed files with 89 additions and 22 deletions
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2
sql/sql_select.cc
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@ -5906,7 +5906,7 @@ eq_ref_table(JOIN *join, ORDER *start_order, JOIN_TAB *tab)
tab->cached_eq_ref_table=1;
if (tab->type == JT_CONST) // We can skip const tables
return (tab->eq_ref_table=1); /* purecov: inspected */
if (tab->type != JT_EQ_REF)
if (tab->type != JT_EQ_REF || tab->table->maybe_null)
return (tab->eq_ref_table=0); // We must use this
Item **ref_item=tab->ref.items;
Item **end=ref_item+tab->ref.key_parts;