Explain how the DISTINCT keyword effects a SELECT statement that lists two columns in the SELECT clause.
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Q111: Choosing specific columns in a SELECT statement
Q112: If a column heading is longer than
Q113: A(n)_ can consist of numbers,characters,or special symbols
Q114: You can include _ to override the
Q115: By default,the data for a numeric column
Q116: If a column heading is longer than
Q117: When should double-quotation marks (" ")be used
Q118: The optional keyword _ can be used
Q119: A(n)_ is an alternative column heading displayed
Q120: If you do not want a column
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