如何在MySQL中使用REGEXP来获取特定列

Question

Recently I tried without successes asking MySQL DB for specific data:

SELECT code, txt_gb, txt_de 
FROM table 
WHERE code REGEXP 'chol'
OR txt_gb REGEXP 'chol' 
OR txt_de REGEXP 'chol' 
ORDER BY code 
COLLATE utf8_unicode_ci

I read somewhere that LIKE command has better performance that REGEXP. Is it true? Can I use LIKE in this case instead of REGEXP to find a part of cell? I am very interested in minimizing the load on the DB.

Answer 1

try

SELECT code, txt_gb, txt_de FROM table WHERE code like '%chol%' OR txt_gb like '%chol%' OR txt_de like '%chol%' ORDER BY code 

yes Regex is slow at time, like is not faster even, but works well and easy to write then regex for your need.