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bugfix: Item_cache_temporal::convert_to_basic_const_item assumed DATETIME

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while it should look at the actual field_type() and use get_date()
or get_time() as appropriate.

test case is in the following commit.
This commit is contained in:
Sergei Golubchik
2018-03-12 20:15:18 +01:00
parent 885edc4fa5
commit 1c6f6dc892
1 changed files with 12 additions and 3 deletions
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15
sql/item.cc
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@@ -9853,9 +9853,18 @@ Item *Item_cache_temporal::convert_to_basic_const_item(THD *thd)
else
{
MYSQL_TIME ltime;
unpack_time(val_datetime_packed(), &ltime);
new_item= (Item*) new (thd->mem_root) Item_datetime_literal(thd, &ltime,
decimals);
if (Item_cache_temporal::field_type() == MYSQL_TYPE_TIME)
{
unpack_time(val_time_packed(), &ltime);
new_item= (Item*) new (thd->mem_root) Item_time_literal(thd, &ltime,
decimals);
}
else
{
unpack_time(val_datetime_packed(), &ltime);
new_item= (Item*) new (thd->mem_root) Item_datetime_literal(thd, &ltime,
decimals);
}
}
return new_item;
}