SELECT * FROM tbl WHERE clm LIKE CONCAT('%',<other sql query LIMIT 1>,'%') - HOW?

问题

How can I combine those two queries into one?

1) This finds the japanese sign for dog (犬):

SELECT japanese 
  FROM edict 
 WHERE english LIKE 'dog' 
 LIMIT 1;

2) This finds all japanese words with the sign for 'dog' (犬) in it:

SELECT japanese 
  FROM edict 
 WHERE japanese LIKE '%犬%';

---

3) I am having trouble combining those two into one, because this doesn't work?!

SELECT japanese 
FROM edict 
WHERE japanese
LIKE CONCAT('%',
    SELECT japanese FROM edict WHERE english LIKE 'dog' LIMIT 1,'%'
);

回答1:

Parenthesises are important, therefore, try this :

SELECT japanese
FROM edict
WHERE japanese LIKE CONCAT('%', 
                           (SELECT japanese FROM edict WHERE english LIKE 'dog' LIMIT 1), 
                           '%');

It might have been good to tell us what error you received, though.

回答2:

Use:

SELECT a.japanese 
  FROM EDICT a
  JOIN EDICT b ON b.japanese = a.japanese
 WHERE b.english LIKE 'dog'

I don't recommend the use of LIMIT, but if you really need it for this, use:

SELECT a.japanese 
  FROM EDICT a
  JOIN (SELECT t.japanese
          FROM EDICT t
         WHERE t.english LIKE 'dog'
         LIMIT 1) b ON b.japanese = a.japanese

来源：https://stackoverflow.com/questions/4005251/select-from-tbl-where-clm-like-concat-other-sql-query-limit-1-how