how sql table from existing table code example

Example 1: how to create table in sql

# Creates a Simple User table
# Uses an auto-incrementing primary key as userId 

CREATE TABLE user (
    userId INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(100),
    password VARCHAR(100) 
) ENGINE=InnoDB;

Example 2: sql create table with columns as another table

SELECT * INTO newtable FROM oldtable WHERE 1 = 0;

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