Question

I have 2 mysql fulltext search queries that return a different set of results.

SELECT e.id AS e__id, 
MATCH(e.subtitle, e.summary, e.title, e.prtext) AGAINST ('lorem') 
FROM exhibitions e

will return a predictable set of 7 rows (I have 10 overall in the table), each having the id of a record that contains the word ‘lorem’.

However, when I introduce a where clause

SELECT e.id 
FROM exhibitions e 
WHERE MATCH(e.subtitle, e.summary, e.title, e.prtext) AGAINST ('lorem')

No rows are returned.

What is the difference between these two queries?

Answer 1

Actually, the issue was I had a number of fulltext indicies on my table structure, when I really only needed one. Here is a correct query with a where and an and clause:

SELECT  e.id AS e__id,
    e.enabled AS e__enabled,
    e.rewrite AS e__rewrite,
    e.title AS e__title,
    e.subtitle AS e__subtitle,
    e.summary AS e__summary,
    e.type AS e__type,
    e.feature_home AS e__feature_home,
    e.date_start AS e__date_start,
    e.date_end AS e__date_end,
    e.prtext AS e__prtext,
    e.last_update AS e__last_update,
    e.file_id1 AS e__file_id1,
    e.file_id2 AS e__file_id2,
    e.file_id3 AS e__file_id3,
    e.file_id4 AS e__file_id4,
    e.file_id5 AS e__file_id5
FROM exhibitions e
WHERE  MATCH(e.subtitle, e.summary, e.title, e.prtext) AGAINST ('lorem')
       AND e.enabled = 1