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A fix for a bug which hits the optimiser when trying to group keys

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for a seemingly impoosbile conds in WHERE....

This crashed MySQL in 4.0.2
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Sinisa@sinisa.nasamreza.org
2002-06-15 14:56:35 +03:00
parent b559a6335c
commit eab0de7ce6
4 changed files with 18 additions and 1 deletions
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2
sql/opt_range.cc
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@ -1291,7 +1291,7 @@ and_all_keys(SEL_ARG *key1,SEL_ARG *key2,uint clone_flag)
}
if (key1->type == SEL_ARG::MAYBE_KEY)
{
key1->left= &null_element; key1->next=0;
key1->right=key1->left= &null_element; key1->next=key1->prev=0;
}
for (next=key1->first(); next ; next=next->next)
{