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How to CREATE TABLE in SQL with and without using Another Table?

in SQL/MySQL on April 29, 2020

The SQL CREATE TABLE Statement

Creates a new table in a database.

Syntax


CREATE TABLE table_name (
    column1_name datatype,
    column2_name datatype,
    column3_name datatype,
   ....
);

Where the datatype parameter specifies the type of data the column can hold for e.g. varchar, integer, date, binary, text, longtext etc.

SQL CREATE TABLE Example


CREATE TABLE Users (
    UserID int,
    LastName varchar(255),
    FirstName varchar(255),
    Email varchar(255),
    Address varchar(255)
);

Whenever we add varchar as datatype, we are required to specify length of the field. It can take up to 255 characters.

Create Table Using Another Table

We can create a copy of an existing table using CREATE TABLE.

The new table gets the same column definitions. We can select all columns or some if we want.

Note: If you create a new table using an existing table, the new table will be filled with the existing values from the old table.

Syntax


CREATE TABLE new_table AS
    SELECT column1_name, column2_name,...
    FROM current_table
    WHERE <add condition>;

Example


CREATE TABLE marketing AS
SELECT username, email
FROM customers;
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