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BUG#25729 - boolean full text search is confused by NULLs produced by

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LEFT JOIN
Fixed that in certain situations MATCH ... AGAINST returns false hits
for NULLs produced by LEFT JOIN when there is no fulltext index
available.


mysql-test/r/fulltext_left_join.result:
  A test case for BUG#25729.
mysql-test/t/fulltext_left_join.test:
  A test case for BUG#25729.
sql/item_func.cc:
  concat_ws(NULL) returns empty string instead of NULL. There is not much
  sense to calculate relevance for empty strings, thus return 0 immediately
  if we got NULL or empty string from concat_ws.
sql/item_func.h:
  Item_func_match::concat renamed to concat_ws.
This commit is contained in:
unknown 2007-04-02 17:26:39 +05:00
commit 3c763afc9c
4 changed files with 26 additions and 8 deletions
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8
sql/item_func.h
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@ -1308,12 +1308,12 @@ public:
FT_INFO *ft_handler;
TABLE *table;
Item_func_match *master; // for master-slave optimization
Item *concat; // Item_func_concat_ws
String value; // value of concat
Item *concat_ws; // Item_func_concat_ws
String value; // value of concat_ws
String search_value; // key_item()'s value converted to cmp_collation
Item_func_match(List<Item> &a, uint b): Item_real_func(a), key(0), flags(b),
join_key(0), ft_handler(0), table(0), master(0), concat(0) { }
join_key(0), ft_handler(0), table(0), master(0), concat_ws(0) { }
void cleanup()
{
DBUG_ENTER("Item_func_match");
@ -1321,7 +1321,7 @@ public:
if (!master && ft_handler)
ft_handler->please->close_search(ft_handler);
ft_handler= 0;
concat= 0;
concat_ws= 0;
DBUG_VOID_RETURN;
}
enum Functype functype() const { return FT_FUNC; }