Advanced SQL
A CASE SQL statement is which of the following?

A way to establish an IF-THEN-ELSE in SQL.
All of these
A way to establish a data definition in SQL.
A way to establish a loop in SQL.

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Advanced SQL
A UNION query is which of the following?

Combines the output from no more than two queries and does not include the same number of columns.
Combines the output from no more than two queries and must include the same number of columns.
Combines the output from multiple queries and must include the same number of columns.
Combines the output from multiple queries and does not include the same number of columns.

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