MySQL存在则更新不存在就插入
MySQL replace into 三种形式:
replace into tbl_name(col_name, ...) values(...)
replace into tbl_name(col_name, ...) select ...
replace into tbl_name set col_name=value, ...
MySQL replace into 三种形式:
replace into tbl_name(col_name, ...) values(...)
replace into tbl_name(col_name, ...) select ...
replace into tbl_name set col_name=value, ...