When I execute this query with MATCH AGAINST using MySql (see Query 1st) the issue in this query they has generated an error like this (see error) or when I execute the same query with = they executed normally(see Query 2nd).
My question is what am I doing wrong with against statement?
Query 1st
SELECT (SELECT COUNT(up.`user_id`)
FROM `users_post` up WHERE MATCH (up.`user_id`) AGAINST (uf.`user_id`))
AS user_count
FROM `users` uf
Error
enter code hereError Code : 1210
Incorrect arguments to AGAINST
(0 ms taken)
Update
Query 2nd
SELECT
(SELECT COUNT(up.`user_id`)
FROM `users_post` up WHERE up.`user_id` = uf.`user_id`)
AS user_count
FROM `users` uf
The problem is that the argument for AGAINST must be a literal string, for example 'Fred'. It is not allowed to use a column name like uf.user_id.
MATCH (up.`user_id`) AGAINST (uf.`user_id`)
-- ^^^^^^^^^^^^ not allowed!
From the documentation:
The search string must be a literal string, not a variable or a column name.
You probably need to use LIKE instead of MATCH, though you should note that it will be much slower.
来源：https://stackoverflow.com/questions/10465758/subquery-incorrect-arguments-to-against-using-mysql