July 2002
Beginner
424 pages
9h 30m
English
Content preview from SQL: Visual QuickStart Guide
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Chapter 10. Creating, Altering, and Dropping Tables
Many DBMSes have interactive, graphical tools that let you create and manage tables and table properties such as column definitions and constraints. In this chapter, I’ll explain how to perform those tasks programmatically by using SQL:
The CREATE TABLE statement creates a new table.
The ALTER TABLE statement modifies the structure of an existing table.
The DROP TABLE statement destroys a table and all its data.
The CREATE TEMPORARY TABLE statement creates a table that the DBMS destroys automatically when it’s no longer in use.
The SELECT INTO statement creates a new table from an existing one.
These statements don’t return a result, but your DBMS normally will print a message indicating whether ...
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