SQL select rows where field contains word from another table's fields

问题

Using MySQL, I have a table with a name field. I want to check that name field against a set of "keywords" that indicate that the name is not a person, but a business.

In words: Get the entire row if the name contains any of the keywords.

My attempt: SELECT * FROM leads WHERE CONTAINS(leads.name, (SELECT word FROM keywords)); (Returns "Subquery returns more than 1 row")

回答1:

It does not work like that. You can use a join instead

SELECT l.* 
FROM leads l
JOIN keywords k on instr(leads.name, word) > 0 

回答2:

Something like this should do it:

SELECT distinct
    l.* 
FROM 
    leads l
    join keywords k on l.name = k.word

EDIT: or something like this if you have a comma delimited list

SELECT distinct
    l.* 
FROM 
    leads l
    join keywords k1 on l.name like concat('%,', k1.word)
    join keywords k2 on l.name like concat('%,', k2.word, ',%')
    join keywords k3 on l.name like concat(k2.word, ',%')
    join keywords k4 on l.name = k4.word

回答3:

Here you are:

SELECT * FROM leads WHERE leads.name IN (SELECT word FROM keywords);

Hope this helps.

回答4:

with numeric values, i use CONCAT with comma separator to be sure to find the exact value. In your case, it would be :

SELECT l.* FROM leads l 
JOIN keywords k 
on instr(CONCAT(',', leads.name, ','),  CONCAT(',', word, ',')) > 0

来源：https://stackoverflow.com/questions/31251314/sql-select-rows-where-field-contains-word-from-another-tables-fields