Joins & Subqueries

Documentation on the JOIN, UNION, EXCEPT and INTERSECT clauses, and on subqueries.

Title Description
Joins Querying from multiple tables
Subqueries Queries within queries
EXCEPT Subtraction of two result sets.
INTERSECT Records that are present in both result sets will be included in the result of the operation.
Precedence Control in Table Operations Controlling order of execution in SELECT, UNION, EXCEPT, and INTERSECT.
UNION Combine the results from multiple SELECT statements into a single result set.
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