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How to set field comments in mysql

青灯夜游
Release: 2022-01-05 16:32:13
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Setting method: 1. Use the "create table table name (field name field type comment 'field comment');" statement; 2. Use "alter table table name modify column field name field type comment 'field The comment ';' statement.

How to set field comments in mysql

The operating environment of this tutorial: windows7 system, mysql8 version, Dell G3 computer.

In the MySQL database, comments on fields or columns are added using the comment attribute.

In the script that creates a new table, you can add comments by adding the comment attribute in the field definition script.

Write field comments when creating a table

create table test1 ( 
    field_name int comment '字段的注释' 
);
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Modify field comments

alter table test1 modify column field_name int comment '修改后的字段注释'; 

-- 注意:字段名和字段类型照写就行
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View field comments Method

-- show 
	show  full  columns  from  test1; 
-- 在元数据的表里面看 
	select * from COLUMNS where TABLE_SCHEMA='my_db' and TABLE_NAME='test1' \G
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