January 2008
Intermediate to advanced
384 pages
8h 1m
English
Content preview from Joe Celko's Thinking in Sets: Auxiliary, Temporal, and Virtual Tables in SQL
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7.3. Temporary Tables
The SQL engine has always been free to create temporary working tables to hold intermediate results. The user will never see these constructs, nor should he or she wish to do so. However, in the early versions of the SQL Standards and vendor products, users were given access to such tables in various ways.
7.3.1. ANSI/ISO Standards
The ANSI/ISO Standards have a clear strong separation of user and admin privileges. In 30 words or less, a USER can INSERT, UPDATE, DELETE, and query the schema. An ADMIN has those privileges plus the ability to change the schema structure with CREATE, ALTER, and DROP statements.
Tables in Standard SQL can be defined as persistent base tables, local temporary tables, or global temporary tables. ...
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