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Introduction to SQL

Introduction to SQL
ORDER BY can be combined with the SELECT statements.

True
False

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Introduction to SQL
The wildcard asterisk (*) is the SQL-92 standard for indicating "any sequence of characters."

False
True

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Introduction to SQL
SQL can be used to:

query database data only.
modify database data only.
create database structures only.
All of these

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Introduction to SQL
'AS' clause is used in SQL for

Join operation.
Selection operation.
Projection operation.
Rename operation.

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Introduction to SQL
A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.

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 > ALL (SELECT SALARY FROM EMPLOYEE);prints

9
10
0
5

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