Question

我想问一下，如何自动增加MySQL表行值

我有这张桌子：

INSERT INTO `ps_product_attribute` (`id_product_attribute`, `id_product`, `reference`, `supplier_reference`, `location`, `ean13`, `upc`, `wholesale_price`, `price`, `ecotax`, `quantity`, `weight`, `unit_price_impact`, `default_on`, `minimal_quantity`, `available_date`) VALUES
(140, 2, '', '', '', '', '', 0.000000, 7.317073, 0.000000, 100, 0.000000, 0.00, 1, 1, '0000-00-00'),
(141, 2, '', '', '', '', '', 0.000000, 14.634146, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(142, 2, '', '', '', '', '', 0.000000, 24.390244, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(143, 3, '', '', '', '', '', 0.000000, 7.317073, 0.000000, 100, 0.000000, 0.00, 1, 1, '0000-00-00'),
(144, 3, '', '', '', '', '', 0.000000, 14.634146, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(145, 3, '', '', '', '', '', 0.000000, 24.390244, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00');

这描述了具有三个价格属性的两种产品。如何为213这样的其他产品制作这个：

INSERT INTO `ps_product_attribute` (`id_product_attribute`, `id_product`, `reference`, `supplier_reference`, `location`, `ean13`, `upc`, `wholesale_price`, `price`, `ecotax`, `quantity`, `weight`, `unit_price_impact`, `default_on`, `minimal_quantity`, `available_date`) VALUES
(140, 2, '', '', '', '', '', 0.000000, 7.317073, 0.000000, 100, 0.000000, 0.00, 1, 1, '0000-00-00'),
(141, 2, '', '', '', '', '', 0.000000, 14.634146, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(142, 2, '', '', '', '', '', 0.000000, 24.390244, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(143, 3, '', '', '', '', '', 0.000000, 7.317073, 0.000000, 100, 0.000000, 0.00, 1, 1, '0000-00-00'),
(144, 3, '', '', '', '', '', 0.000000, 14.634146, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(145, 3, '', '', '', '', '', 0.000000, 24.390244, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00');
(146, 4, '', '', '', '', '', 0.000000, 7.317073, 0.000000, 100, 0.000000, 0.00, 1, 1, '0000-00-00'),
(147, 4, '', '', '', '', '', 0.000000, 14.634146, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(148, 4, '', '', '', '', '', 0.000000, 24.390244, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(149, 5, '', '', '', '', '', 0.000000, 7.317073, 0.000000, 100, 0.000000, 0.00, 1, 1, '0000-00-00'),
(150, 5, '', '', '', '', '', 0.000000, 14.634146, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(151, 5, '', '', '', '', '', 0.000000, 24.390244, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00');
.
.
.

最后一个id_product应为216。

感谢您的帮助！

Answer 1

我认为您正在寻找id列的AUTO_INCREMENT规范。您应该查看此链接，以便正确理解如何管理您的表：http://dev.mysql.com/doc/refman/5.7/en/example-auto-increment.html

Answer 2

步骤1：设置字段id_product_attribute自动增量

ALTER TABLE ps_product_attribute MODIFY COLUMN id_product_attribute  INT auto_increment

步骤2：从插入脚本中删除列id_product_attribute并创建procudure（将数字1000替换为您想要的产品编号）。例如：

DELIMITER $$

DROP PROCEDURE IF EXISTS abc $$
CREATE PROCEDURE abc()
BEGIN
   DECLARE a INT Default 1 ;
      simple_loop: LOOP
         SET a=a+1;
         INSERT INTO `ps_product_attribute` (`id_product`, `reference`, `supplier_reference`, `location`, `ean13`, `upc`, `wholesale_price`, `price`, `ecotax`, `quantity`, `weight`, `unit_price_impact`, `default_on`, `minimal_quantity`, `available_date`) VALUES
(a, '', '', '', '', '', 0.000000, 7.317073, 0.000000, 100, 0.000000, 0.00, 1, 1, '0000-00-00'),
(a, '', '', '', '', '', 0.000000, 14.634146, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00'),
(a, '', '', '', '', '', 0.000000, 24.390244, 0.000000, 100, 0.000000, 0.00, 0, 1, '0000-00-00');
         IF a=1000 THEN
            LEAVE simple_loop;
         END IF;
   END LOOP simple_loop;

END $$

DELIMITER ;

第3步：运行程序

Answer 3

创建一个过程，以便从预先指定的数字生成id_product值到所需的最大数量，例如216，并在循环中使用这些值运行插入。

编写以下示例，假设id_product_attribute列中的auto_increment。

示例

delimiter //
drop procedure add_dummy_records //
create procedure add_dummy_records( inout id_product_start int, in max_id int )
begin
  declare start_id int;
  -- declare query text;

   set start_id = id_product_start;
  set @query := 'INSERT INTO `ps_product_attribute` 
                 (`id_product`, `reference`, `supplier_reference`, 
                  `location`, `ean13`, `upc`, 
                  `wholesale_price`, `price`, `ecotax`, 
                  `quantity`, `weight`, `unit_price_impact`, 
                  `default_on`, `minimal_quantity`, `available_date`
                 ) VALUES\n';

  adding_rows: loop
    if ( start_id > id_product_start ) then
      set @query := concat( @query, ',\n' );
    end if;

    set @query := concat( @query, '( ', start_id, ', \'\', \'\', \'\', \'\', \'\', 
                          \'0.000000\', 7.317073, \'0.000000\', 100, \'0.000000\', \'0.00\', 
                          1, 1, \'0000-00-00\' ),\n' );
    set @query := concat( @query, '( ', start_id, ', \'\', \'\', \'\', \'\', \'\', 
                          \'0.000000\', 14.634146, \'0.000000\', 100, \'0.000000\', \'0.00\', 
                          0, 1, \'0000-00-00\' ),\n' );
    set @query := concat( @query, '( ', start_id, ', \'\', \'\', \'\', \'\', \'\', 
                          \'0.000000\', 24.390244, \'0.000000\', 100, \'0.000000\', \'0.00\', 
                          0, 1, \'0000-00-00\' ),\n' );

    if ( start_id = max_id ) then
      set id_product_start := start_id;
      leave adding_rows;
    else
      set start_id := start_id + 1;
    end if;
  end loop adding_rows;

  prepare stmt from @query;
  execute stmt;
  drop prepare stmt;
end;
//
delimiter ;

现在，您可以使用id_product的起始值和最大值包含所有SP。

set @id_start := 5;
set @max_id := 216;
call add_dummy_records( @id_start, @max_id );

-- check if if id_start > 5 and is equal to max_id
select ( @id_start > 5 ), ( @id_start = @max_id );

如何自动增加mysql表的行值

3 个答案: