replace,concat,length,INSTR,SUBSTR函数（动态更新数据库的字段的值，比如1-2-3-4-5-6-，在后台传过来一个-1-，更新后的字段是2-3-4-5-6-）

 

SELECT
PRESERVE03,
replace(concat( '-',PRESERVE03),'-1-', '-') as r,
concat( '-',PRESERVE03) as c,
length(replace(concat( '-',PRESERVE03),'-1-', '-')) as l,
INSTR(PRESERVE03,'1q') as i,
SUBSTR(PRESERVE03,2) as s,
SUBSTR( replace(concat( '-',PRESERVE03),'-1-', '-'), INSTR(replace(concat( '-',PRESERVE03),'-1-', '-'),'-') + 1，100 ) as ll

FROM T_CADRE_PROCESS_MOTION