MySQL creates task tables to implement task management functions

MySQL creates a task table to implement task management function

In the project development process, task management is a very important function. By creating task sheets, we can better organize and manage tasks in the project and improve the team's work efficiency and collaboration capabilities. This article will introduce how to use MySQL to create a task table to implement task management functions, and provide corresponding code examples.

1. Create database and tables

First, we need to create a database and create a task table in the database. Assume that our database is named "task_management" and the table is named "task". The table structure is as follows:

CREATE DATABASE task_management;

USE task_management;

CREATE TABLE `task` (
  `id` INT(11) NOT NULL AUTO_INCREMENT,
  `title` VARCHAR(100) NOT NULL,
  `description` TEXT NOT NULL,
  `status` ENUM('待办', '进行中', '已完成') NOT NULL DEFAULT '待办',
  `create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `update_time` TIMESTAMP NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

In the above code, the task table contains the following fields:

• id: the unique identifier of the task, auto-incremented primary key;
• title: task title, the length is limited to 100 characters;
• description: task description, stored using TEXT type, the length is not Limited;
• status: task status, defined using ENUM type, optional values ​​are 'to-do', 'in progress', 'completed';
• create_time: task creation time, using TIMESTAMP type, the default value is the current time;
• update_time: task update time, using the TIMESTAMP type, the default value is NULL, automatically updated to the current time when the task status is updated.

2. Add task

To add a task, we can use the INSERT INTO statement to insert task information into the task table. The following is a sample code:

INSERT INTO task (title, description) VALUES ('完成项目计划', '编写项目计划文档，明确项目的目标、范围和时间安排。');

The above code will insert a task record into the task table. The task title is 'Complete the project plan' and the task description is 'Write a project plan document and clarify the goals and scope of the project. and timing. '.

3. Query Task

To query the task list, we can use the SELECT statement to retrieve task information from the task table. The following is a sample code:

SELECT * FROM task;

The above code will query all task information in the task table and return the query results.

4. Update task status

To update the task status, we can use the UPDATE statement to update the status field in the task table. The following is a sample code:

UPDATE task SET status = '已完成' WHERE id = 1;

The above code will update the status of the task with id 1 to 'Completed'.

5. Delete Task

To delete a task, we can use the DELETE FROM statement to delete records in the task table. The following is a sample code:

DELETE FROM task WHERE id = 1;

The above code will delete the task record with id 1.

Through the above sample code, we can implement basic task management functions. You can expand task management functions according to actual needs, such as adding task leaders, setting task priorities, etc.

Summary

By using MySQL to create a task table, we can easily implement task management functions. By adding, querying, updating and deleting tasks, we can organize and manage tasks in the project efficiently. I hope this article will help you understand how to use MySQL to create task tables and implement task management functions.

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