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Introduction to SQL

Introduction to SQL
The SQL statement that queries or reads data from a table is ________ .

None of these
SELECT
READ
QUERY

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Introduction to SQL
The benefits of a standard relational language include which of the following?

All of these
Reduced training costs
Increased dependence on a single vendor
Applications are not needed

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Introduction to SQL
Which of the following is a SQL aggregate function?

JOIN
LEFT
LEN
AVG

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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

9
5
0
10

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Introduction to SQL
............. joins two or more tables based on a specified column value not equaling a specified column value in another table.

OUTER JOIN
NATURAL JOIN
EQUIJOIN
NON-EQUIJOIN

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Introduction to SQL
SUM, AVG, MIN, and MAX can only be used with numeric columns.

True
False

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