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bugfix: Item_cache_temporal::convert_to_basic_const_item assumed DATETIME

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this is a 10.3 version of 1c6f6dc8924
This commit is contained in:
Sergei Golubchik 2018-03-28 20:52:06 +02:00
parent 7601331140
commit c43a0e0a77
3 changed files with 27 additions and 8 deletions
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2
mysql-test/main/derived_cond_pushdown.result
View File

@ -11819,7 +11819,7 @@ EXPLAIN
"access_type": "ALL",
"rows": 3,
"filtered": 100,
"attached_condition": "t1.i = TIMESTAMP'2007-05-28 00:00:00'"
"attached_condition": "t1.i = DATE'2007-05-28'"
}
}
}

29
sql/item.cc
View File

@ -10168,17 +10168,32 @@ Item *Item_cache_temporal::convert_to_basic_const_item(THD *thd)
Item *new_item;
DBUG_ASSERT(value_cached || example != 0);
if (null_value)
new_item= (Item*) new (thd->mem_root) Item_null(thd);
return new (thd->mem_root) Item_null(thd);
else
{
MYSQL_TIME ltime;
unpack_time(val_datetime_packed(), &ltime, MYSQL_TIMESTAMP_DATETIME);
new_item= (Item*) new (thd->mem_root) Item_datetime_literal(thd, &ltime,
decimals);
}
return make_literal(thd);
return new_item;
}
Item *Item_cache_datetime::make_literal(THD *thd)
{
MYSQL_TIME ltime;
unpack_time(val_datetime_packed(), &ltime, MYSQL_TIMESTAMP_DATETIME);
return new (thd->mem_root) Item_datetime_literal(thd, &ltime, decimals);
}
Item *Item_cache_date::make_literal(THD *thd)
{
MYSQL_TIME ltime;
unpack_time(val_datetime_packed(), &ltime, MYSQL_TIMESTAMP_DATE);
return new (thd->mem_root) Item_date_literal(thd, &ltime);
}
Item *Item_cache_time::make_literal(THD *thd)
{
MYSQL_TIME ltime;
unpack_time(val_time_packed(), &ltime, MYSQL_TIMESTAMP_TIME);
return new (thd->mem_root) Item_time_literal(thd, &ltime, decimals);
}
bool Item_cache_real::cache_value()
{

4
sql/item.h
View File

@ -6169,6 +6169,7 @@ public:
*/
Item *clone_item(THD *thd);
Item *convert_to_basic_const_item(THD *thd);
virtual Item *make_literal(THD *) =0;
};
@ -6180,6 +6181,7 @@ public:
bool cache_value();
Item *get_copy(THD *thd)
{ return get_item_copy<Item_cache_time>(thd, this); }
Item *make_literal(THD *);
};
@ -6190,6 +6192,7 @@ public:
:Item_cache_temporal(thd, &type_handler_datetime2) { }
Item *get_copy(THD *thd)
{ return get_item_copy<Item_cache_datetime>(thd, this); }
Item *make_literal(THD *);
};
@ -6200,6 +6203,7 @@ public:
:Item_cache_temporal(thd, &type_handler_newdate) { }
Item *get_copy(THD *thd)
{ return get_item_copy<Item_cache_date>(thd, this); }
Item *make_literal(THD *);
};