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Introduction to SQL

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

Nothing
TRUE
FLASE
Hi

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Introduction to SQL
Which of the following is a valid SQL type?

FLOAT
All of these
CHARACTER
NUMERIC

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

COLLAPSE
REMOVE
ALTER
DELETE

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Introduction to SQL
SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.

False
True

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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.

False
True

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Introduction to SQL
SQL is a data sublanguage.

False
True

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