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Introduction to SQL

Introduction to SQL
The SQL statement: SELECT Name, COUNT(*) FROM NAME_TABLE; counts the number of name rows and displays this total in a table with a single row and a single column.

True
False

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Introduction to SQL
SQL data definition commands make up a(n) ________ .

DML
XML
HTML
DDL

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Introduction to SQL
SQL can be used to:

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

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Introduction to SQL
Which SQL keyword is used to retrieve only unique values?

DISTINCTIVE
DISTINCT
UNIQUE
DIFFERENT

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Introduction to SQL
Count function in SQL returns the number of

distinct values.
values.
columns.
groups.

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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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