MySQL learning note--3. Table

1. Create a table

CREATE TABLE Table name (
ID int unsigned NOT NULL Auto_increment primary key,
Field column type NOT null default ' ',
......
Field column type NOT null default ' '
) engine MyISAM charset UTF8;

2. Modify the table

Add Columns:

ALTER TABLE table name add column Name column type column parameter; Add columns to the last face of a table

ALTER TABLE table name add column Name column type column parameter first; Add columns to the front of the table

ALTER TABLE table name add column Name column type column parameter after a column name; Add a column after the specified column

To delete a column:

ALTER TABLE name drop column name;

To modify a column:

ALTER TABLE table name modify column name new column type new column parameter; Column name cannot be changed

ALTER TABLE name change old column name new column name new column type new column parameter;

@zhnoah
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MySQL learning note--3. Table