mysql按照逗号截取
-- ,293934.31,257000
select remark, SUBSTRING_INDEX(SUBSTRING_INDEX(remark,',',2),',',-1) from tb_1207test -- 293934.31
-- ,293934.31,257000
select remark, SUBSTRING_INDEX(SUBSTRING_INDEX(remark,',',3),',',-1) from tb_1207test -- 257000