To establish the inventory change record table of the grocery shopping system in MySQL, specific code examples are required
1. Background
With the continuous development of e-commerce , shopping behavior has moved from offline to online, and more and more people choose to shop on e-commerce platforms. For the grocery shopping system, inventory is one of the most important parts of the system, and inventory management is also the most critical part of the system.
In order to ensure that inventory management in the grocery shopping system can be carried out efficiently, inventory changes need to be recorded in a timely manner, so that inventory problems can be discovered in a timely manner so that they can be resolved in a timely manner.
2. Establish an inventory change record table for the grocery shopping system in MySQL
Based on the above issues, we can create an inventory change record table in MySQL to record the changes in the grocery shopping system. Inventory change information. The following is a specific table creation code example:
CREATE TABLE inventory_change_record
(
id
bigint(20) NOT NULL AUTO_INCREMENT,
product_id
bigint(20) NOT NULL COMMENT 'product id',
change_amount
int(11) NOT NULL COMMENT 'change amount',
change_time
datetime NOT NULL COMMENT 'Change time',
change_type
tinyint(4) NOT NULL COMMENT 'Change type: 1. Inbound; 2. Outbound',
operator
varchar( 255) NOT NULL COMMENT 'Change personnel',
PRIMARY KEY (id
)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='Inventory change record table';
In the above table building code, we have defined the following fields:
3. Inventory change record table using MySQL in the grocery shopping system
In the grocery shopping system, we can use the inventory change record table in the following places:
The following is an example of the warehousing operation code:
//Insert inventory change record
INSERT INTO inventory_change_record
(product_id
, change_amount
,change_time
,change_type
,operator
) VALUES (1,100,'2022-05-01 10:00:00',1 ,'Zhang San');
The following is an example of the outbound operation code:
//Insert inventory change record
INSERT INTO inventory_change_record
(product_id
, change_amount
,change_time
,change_type
,operator
) VALUES (1,50,'2022-05-01 14:00:00' ,2,'李思');
The following is a code example for querying inventory change records:
//Querying inventory change records
SELECT * FROM inventory_change_record
WHERE product_id
= 1 ORDER BY change_time
DESC;
IV. Summary
The above is the implementation method of the inventory change record table using MySQL in the grocery shopping system. By establishing an inventory change record table, we can manage inventory more efficiently, discover and solve inventory problems in a timely manner, and ensure the normal operation of the system.
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