示例:
SELECT *,SUBSTRING_INDEX(`value`,",",1) FROM `system_config` WHERE name='nightShiftTypeRange'
SUBSTRING_INDEX(字段,分割符,选哪段)
示例:
SELECT *,SUBSTRING_INDEX(`value`,",",1) FROM `system_config` WHERE name='nightShiftTypeRange'
SUBSTRING_INDEX(字段,分割符,选哪段)