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Introduction to SQL

Introduction to SQL
The SELECT statement SELECT 'Hi' FROM DUAL WHERE NULL = NULL; Outputs

Hi
Nothing
TRUE
FLASE

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

None of these
QUERY
SELECT
READ

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Introduction to SQL
To establish a range of values, < and > can be used.

True
False

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Introduction to SQL
Which SQL statement is used to update data in a database?

SAVE
SAVE AS
UPDATE
MODIFY

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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

10
5
0
9

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Introduction to SQL
What is the meaning of LIKE '%0%0%'

Feature begins with two 0's
Feature ends with two 0's
Feature has more than two 0's
Feature has two 0's in it, at any position

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