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finally proper recursive descent for parsing expressions with MATCH ... AGAINST in add_ft_keys()

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unknown
2003-07-07 19:02:58 +02:00
parent 7ff9378a34
commit a4c3f0d727
3 changed files with 56 additions and 29 deletions
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43
mysql-test/r/fulltext.result
View File

@ -5,9 +5,6 @@ INSERT INTO t1 VALUES('MySQL has now support', 'for full-text search'),
('Only MyISAM tables','support collections'),
('Function MATCH ... AGAINST()','is used to do a search'),
('Full-text search in MySQL', 'implements vector space model');
explain select * from t1 where MATCH(a,b) AGAINST ("collections");
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
select * from t1 where MATCH(a,b) AGAINST ("collections");
a b
Only MyISAM tables support collections
@ -19,11 +16,36 @@ select * from t1 where MATCH(a,b) AGAINST ("indexes collections");
a b
Full-text indexes are called collections
Only MyISAM tables support collections
select * from t1 where MATCH(a,b) AGAINST ("collections") UNION ALL select * from t1 where MATCH(a,b) AGAINST ("indexes");
a b
Only MyISAM tables support collections
Full-text indexes are called collections
Full-text indexes are called collections
explain select * from t1 where MATCH(a,b) AGAINST ("collections");
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>0;
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>1;
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>=0;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 5 Using where
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>=1;
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
explain select * from t1 where 0<MATCH(a,b) AGAINST ("collections");
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
explain select * from t1 where 1<MATCH(a,b) AGAINST ("collections");
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
explain select * from t1 where 0<=MATCH(a,b) AGAINST ("collections");
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 5 Using where
explain select * from t1 where 1<=MATCH(a,b) AGAINST ("collections");
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>0 and a like '%ll%';
table type possible_keys key key_len ref rows Extra
t1 fulltext a a 0 1 Using where
select * from t1 where MATCH(a,b) AGAINST("support -collections" IN BOOLEAN MODE);
a b
MySQL has now support for full-text search
@ -98,6 +120,11 @@ select * from t1 where MATCH b AGAINST ("sear*" IN BOOLEAN MODE);
a b
MySQL has now support for full-text search
Function MATCH ... AGAINST() is used to do a search
select * from t1 where MATCH(a,b) AGAINST ("collections") UNION ALL select * from t1 where MATCH(a,b) AGAINST ("indexes");
a b
Only MyISAM tables support collections
Full-text indexes are called collections
Full-text indexes are called collections
delete from t1 where a like "MySQL%";
update t1 set a='some test foobar' where MATCH a,b AGAINST ('model');
delete from t1 where MATCH(a,b) AGAINST ("indexes");

20
mysql-test/t/fulltext.test
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@ -13,13 +13,23 @@ INSERT INTO t1 VALUES('MySQL has now support', 'for full-text search'),
# nl search
explain select * from t1 where MATCH(a,b) AGAINST ("collections");
select * from t1 where MATCH(a,b) AGAINST ("collections");
select * from t1 where MATCH(a,b) AGAINST ("indexes");
select * from t1 where MATCH(a,b) AGAINST ("indexes collections");
# UNION of fulltext's
select * from t1 where MATCH(a,b) AGAINST ("collections") UNION ALL select * from t1 where MATCH(a,b) AGAINST ("indexes");
# add_ft_keys() tests
explain select * from t1 where MATCH(a,b) AGAINST ("collections");
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>0;
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>1;
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>=0;
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>=1;
explain select * from t1 where 0<MATCH(a,b) AGAINST ("collections");
explain select * from t1 where 1<MATCH(a,b) AGAINST ("collections");
explain select * from t1 where 0<=MATCH(a,b) AGAINST ("collections");
explain select * from t1 where 1<=MATCH(a,b) AGAINST ("collections");
explain select * from t1 where MATCH(a,b) AGAINST ("collections")>0 and a like '%ll%';
# boolean search
@ -48,6 +58,10 @@ select * from t1 where MATCH a,b AGAINST ('"text i"' IN BOOLEAN MODE);
select * from t1 where MATCH a AGAINST ("search" IN BOOLEAN MODE);
select * from t1 where MATCH b AGAINST ("sear*" IN BOOLEAN MODE);
# UNION of fulltext's
select * from t1 where MATCH(a,b) AGAINST ("collections") UNION ALL select * from t1 where MATCH(a,b) AGAINST ("indexes");
#update/delete with fulltext index
delete from t1 where a like "MySQL%";

20
sql/sql_select.cc
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@ -1676,26 +1676,13 @@ add_ft_keys(DYNAMIC_ARRAY *keyuse_array,
if (((Item_cond*) cond)->functype() == Item_func::COND_AND_FUNC)
{
Item *item;
/*
I'm (Sergei) too lazy to implement proper recursive descent here,
and anyway, nobody will use such a stupid queries
that will require it :-)
May be later...
*/
while ((item=li++))
{
if (item->type() == Item::FUNC_ITEM &&
((Item_func *)item)->functype() == Item_func::FT_FUNC)
{
cond_func=(Item_func_match *)item;
break;
}
}
add_ft_keys(keyuse_array,stat,item,usable_tables);
}
}
if ((!cond_func || cond_func->key == NO_SUCH_KEY) ||
(!(usable_tables & cond_func->table->map)))
if (!cond_func || cond_func->key == NO_SUCH_KEY ||
!(usable_tables & cond_func->table->map))
return;
KEYUSE keyuse;
@ -1707,7 +1694,6 @@ add_ft_keys(DYNAMIC_ARRAY *keyuse_array,
VOID(insert_dynamic(keyuse_array,(gptr) &keyuse));
}
static int
sort_keyuse(KEYUSE *a,KEYUSE *b)
{