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Introduction to SQL

Introduction to SQL
Which SQL keyword is used to sort the result-set?

SORT BY
ORDER BY
ORDER
SORT

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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
NOT operator
EXISTS operator
IS NULL operator

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Introduction to SQL
The wildcard asterisk (*) is the SQL-92 standard for indicating "any sequence of characters."

True
False

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Introduction to SQL
The SQL statementSELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL;

456789
1234
6789
2345

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Introduction to SQL
Which of the following are the five built-in functions provided by SQL?

COUNT, SUM, AVG, MAX, MIN
SUM, AVG, MIN, MAX, MULT
SUM, AVG, MIN, MAX, NAME
SUM, AVG, MULT, DIV, MIN

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