mysql 分页存储过程

　　近一段时间使用mysql数据库做项目，用到了分页存储过程，从网上找了一个，当时的sql语句中有一些注释，试验了半天也没有成功，报缺参数等错误，最后将

存储过程中的空格都用一个空格替换，将注释去掉就可以了，可能是mysql存储过程对注释有特殊限制。

DELIMITER $$

USE `rhjt-teamwork`$$

DROP PROCEDURE IF EXISTS `p_test`$$

CREATE DEFINER=`root`@`%` PROCEDURE `p_test`(
    IN p_table_name        VARCHAR(100) ,
      IN p_order_string        VARCHAR(100),
     IN p_page_size            INT ,
       IN p_page_now            INT ,
          IN p_where_string  VARCHAR(100), 
          IN    p_fields            VARCHAR(100), 
      OUT p_out_rows INT    
)
    COMMENT '分页存储过程'
BEGIN
     
    
     /*定义变量*/
    DECLARE m_begin_row INT DEFAULT 0;
    DECLARE m_limit_string VARCHAR(128);
    /*构造语句*/    
    SET m_begin_row = (p_page_now - 1) * p_page_size;
    SET m_limit_string = CONCAT(' LIMIT ', m_begin_row, ', ', p_page_size);
    
     
      
         SET @COUNT_STRING = CONCAT('SELECT COUNT(*) INTO @ROWS_TOTAL FROM ', p_table_name, ' ', p_where_string);
         
         
    SET @MAIN_STRING = CONCAT('SELECT ', p_fields, ' FROM ', p_table_name, ' ', p_where_string ,' ', p_order_string, m_limit_string );
    /*预处理*/
     PREPARE count_stmt FROM @COUNT_STRING;
    EXECUTE count_stmt;
    DEALLOCATE PREPARE count_stmt;
  SET p_out_rows = @ROWS_TOTAL;
     
     
    PREPARE main_stmt FROM @MAIN_STRING;
    EXECUTE main_stmt;
    DEALLOCATE PREPARE main_stmt;
    
END$$

DELIMITER ;