MYSQL存储过程中表名使用变量_MySQL

MYSQL存储过程中表名使用变量

# 该存储过程定义了几个传入参数，前缀都是para_

# 该存储过程的此部分功能是，查询根据传入参数动态生成的tbl_name表名的表中

SET  tbl_name = CONCAT("result_", para_user);SET @STMT := CONCAT("SELECT COUNT(*) INTO @num_count FROM ", tbl_name                      ," WHERE rng = '", para_rng                      ,"' AND north_latitude = ", para_north                      ," AND bck_datetime = '", para_datetime                      ,"' AND east_longitude = ", para_east, ";");  PREPARE STMT FROM @STMT;  EXECUTE STMT;

注：目前 存储过程 支持动态SQL，函数不支持。