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Introduction to SQL

Introduction to SQL
Which of the following group functions ignore NULL values?

All of these
MAX
COUNT
SUM

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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 > ALL (SELECT SALARY FROM EMPLOYEE);prints

5
9
0
10

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Introduction to SQL
SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in functions.

False
True

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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

5
10
9
0

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Introduction to SQL
You can add a row using SQL in a database with which of the following?

ADD
MAKE
INSERT
CREATE

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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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