How to use mysql FULLTEXT Search with WHERE in multiple fields using OR?

Question

I am using mysql FULLTEXT Search, innodb table engine.
search term : tom

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1  AND category = 100 OR category = 200 ORDER BY seeders DESC LIMIT 0, 30

above query gives 550 records, expected records are 6

but if i search for each category separately. searching in category 100

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1  AND category = 100 ORDER BY seeders DESC LIMIT 0, 30

gives 5 records

and searching in category 200

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1  AND category = 200 ORDER BY seeders DESC LIMIT 0, 30

gives 1 record.

so i am expecting records 6 , by combining 5+1 but i am getting 550, even those records which doesn't have word tom in it.

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Another Issue, is searching in category or sub_category in same query for word tom

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1  AND sub_category = 101 OR category = 200 ORDER BY seeders DESC LIMIT 0, 30

gives 550 records. expected records are 6

so how can i fix this ?

Answer 1

i have found solution. the query should be

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1  AND (category = 100 OR category = 200) ORDER BY seeders DESC LIMIT 0, 30

notice, the OR operator is in brackets

and 2nd query issue, searching in two fields using OR becomes

SELECT * FROM content WHERE MATCH(title) AGAINST('tom' IN BOOLEAN MODE) AND is_enabled = 1  AND (sub_category = 101 OR category = 200) ORDER BY seeders DESC LIMIT 0, 30