- Tags: Keyword
- Categories: Reference, SQL Keywords, SQL Reference
Quick Reference
The CREATE keyword is used to create new databases, indexes, procedures, tables, and views.
CREATE DATABASE
The following creates a database called “sitename_db”.
CREATE DATABASE sitename_db;
CREATE TABLE
The following creates a table called Customers that contains six columns: id_customer, first_name, last_name, address, city, state, country.
CREATE TABLE Customers (
id_customer int,
first_name varchar(255),
last_name varchar(255),
address varchar(255),
city varchar(255),
state varchar(255),
country varchar(255)
);
The following creates a new table called “Users” by copying two of the columns from the Customers table.
CREATE TABLE Users AS
SELECT first_name, last_name
FROM Customers;
CREATE INDEX
The following creates an index named “idx_last_name” on the last_name column in the Customers table.
CREATE INDEX idx_last_name
ON Customers (last_name);
The following creates an index named “idx_full_name” on the combination of the first_name and last_name columns in the Customers table.
CREATE INDEX idx_full_name
ON Customers (first_name, last_name);
CREATE UNIQUE INDEX
The following creates a unique index named “uidx_customer” on the “id_customer” column in the Customers table.
CREATE UNIQUE INDEX uidx_customer
ON Customers (id_customer);
CREATE VIEW
The following creates a view called “Canada Customers” that selects all customers (first_name and last_name columns) from Canada in the Customers table.
CREATE VIEW [Canada Customers] AS
SELECT first_name, last_name
FROM Customers
WHERE Country = 'Canada';
CREATE OR REPLACE VIEW
The following updates a view by adding the city column to the “Canada Customers” view.
CREATE VIEW [Canadian Customers] AS
SELECT last_name, first_name
FROM Customers
WHERE Country = 'Canada';
CREATE PROCEDURE
The following creates a stored procedure named “select_all_customers” that selects all records from the Customers table.
CREATE PROCEDURE select_all_customers
AS
SELECT * FROM Customers
GO;
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SQL NOTES:
- Any work being done to modify the structure of a database or delete tables or the the database itself should only be done after making a recent backup
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