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Introduction to SQL

Introduction to SQL
The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.

True
False

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Introduction to SQL
A subquery in an SQL SELECT statement is enclosed in:

brackets -- [...].
parenthesis -- (...) .
CAPITAL LETTERS.
braces -- {...}.

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Introduction to SQL
The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column.

True
False

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Introduction to SQL
Which of the following SQL commands can be used to add data to a database table?

ADD
APPEND
INSERT
UPDATE

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Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

None of these
more than 10 rows
less than 10 rows
exactly 10 rows

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Introduction to SQL
Which of the following is valid SQL for an Index?

ADD INDEX ID;
REMOVE INDEX ID;
CHANGE INDEX ID;
CREATE INDEX ID;

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