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Introduction to SQL

Introduction to SQL
Which SQL statement is used to delete data FROM a database?

ALTER
DELETE
COLLAPSE
REMOVE

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

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

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Introduction to SQL
Which of the SQL statements is correct?

SELECT Username, Password WHERE Username = 'user1'
None of these
SELECT Username, Password FROM Users
SELECT Username AND Password FROM Users

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Introduction to SQL
Which one of the following sorts rows in SQL?

GROUP BY
ALIGN BY
SORT BY
ORDER BY

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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

0
5
9
10

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Introduction to SQL
SELECT DISTINCT is used if a user wishes to see duplicate columns in a query.

False
True

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