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Merge magare.gmz:/home/kgeorge/mysql/work/B30715-merged-5.0-opt

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into  magare.gmz:/home/kgeorge/mysql/work/B30715-merged-5.1-opt
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gkodinov/kgeorge@magare.gmz
2007-10-24 11:50:09 +03:00
parent 97e0180b2b 1cda34d30c
commit e8e01beee8
6 changed files with 44 additions and 4 deletions
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7
sql/opt_sum.cc
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@ -295,14 +295,15 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
Check if case 1 from above holds. If it does, we should read
the skipped tuple.
*/
if (ref.key_buff[prefix_len] == 1 &&
/*
if (item_field->field->real_maybe_null() &&
ref.key_buff[prefix_len] == 1 &&
/*
Last keypart (i.e. the argument to MIN) is set to NULL by
find_key_for_maxmin only if all other keyparts are bound
to constants in a conjunction of equalities. Hence, we
can detect this by checking only if the last keypart is
NULL.
*/
*/
(error == HA_ERR_KEY_NOT_FOUND ||
key_cmp_if_same(table, ref.key_buff, ref.key, prefix_len)))
{