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get_datetime_value() should not double-cache its own Item_cache_temporal items, but it *should* cache other Item_cache items, such as Item_cache_str. sql/item.h: shortcut, to avoid going through the switch in Item::cmp_type() sql/item_cmpfunc.cc: even if the item is Item_cache_str - it still needs to be converted and cached. sql/item_timefunc.h: all descendants of Item_temporal_func always have cmp_type==TIME_RESULT. Even Item_date_add_interval, that might have field_type == MYSQL_TYPE_STRING.
11 lines
325 B
Text
11 lines
325 B
Text
#
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# MDEV-4265 5.5 is slower than 5.3 because of many str_to_datetime calls
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#
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--source include/have_debug.inc
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create table t1 (a date);
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insert t1 values ('2000-01-02'), ('2001-02-03'), ('2002-03-04');
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set debug_dbug='d,str_to_datetime_warn';
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select * from t1 where a > date_add('2000-01-01', interval 5 day);
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drop table t1;
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