Question

SELECT s.srv_id, sp.is_nocommission 
FROM services_param sp
JOIN services s ON (sp.pid = s.id) 
WHERE sp.prefix LIKE '%011%';

我可以得到一个或多个结果。如果srv_id将is_nocommission设置为1（非空），我只需选择它，无论哪种方式我都需要选择最少。请帮忙。

Answer 1

虽然我对您的问题和评论不够清楚，但您可以尝试以下方法：

SELECT CASE sp.is_nocommission WHEN 1 THEN s.srv_id ELSE MIN(s.srv_id) END
FROM services_param sp
JOIN services s ON (sp.pid = s.id) 
WHERE sp.prefix LIKE '%011%'

mysql if语句行检查

1 个答案: