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Introduction to SQL

Introduction to SQL
The HAVING clause acts like a WHERE clause, but it identifies groups that meet a criterion, rather than rows.

False
True

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Introduction to SQL
Which of the following is a valid SQL type?

All of these
NUMERIC
FLOAT
CHARACTER

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

ADD
INSERT
APPEND
UPDATE

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Introduction to SQL
The SQL WHERE clause:

limits the column data that are returned.
Neither A nor B are correct.
limits the row data are returned.
Both A and B are correct.

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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
What operator tests column for the absence of data?

None of these
EXISTS operator
IS NULL operator
NOT operator

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