Question

I’m trying to use a MATCH statement on a LEFT JOIN but I keep getting:

 Incorrect arguments to AGAINST

This is what I am trying:

SELECT *
FROM Posts
LEFT JOIN `Follow_Searches` 
ON MATCH(`Posts`.`B`) AGAINST (`Follow_Searches`.`B`)

How can this be done?

Answer 1

That cannot be done. From the manual:

Full-text searching is performed using MATCH() … AGAINST syntax. MATCH() takes a comma-separated list that names the columns to be searched. AGAINST takes a string to search for, and an optional modifier that indicates what type of search to perform. The search string must be a literal string, not a variable or a column name.

Emphasis mine.