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Introduction to SQL

Introduction to SQL
COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.

False
True

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

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Introduction to SQL
Which of the following is the correct order of keywords for SQL SELECT statements?

WHERE, FROM,SELECT
SELECT, FROM, WHERE
FROM, WHERE, SELECT
SELECT,WHERE,FROM

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Introduction to SQL
Table Employee has 10 records. It has a non-NULL SALARY column which is also UNIQUE.The SQL statementSELECT COUNT(*) FROM Employee WHERE SALARY > ANY (SELECT SALARY FROM EMPLOYEE);prints

10
0
9
5

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Introduction to SQL
SQL is:

a data sublanguage.
a DBMS.
an operating system.
a programming language.

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Introduction to SQL
Indexes can usually be created for both primary and secondary keys.

True
False

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