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Introduction to SQL

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

Hi
Nothing
FLASE
TRUE

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Introduction to SQL
SQL is a data sublanguage.

False
True

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Introduction to SQL
The SQL statementSELECT SUBSTR('123456789', INSTR('abcabcabc', 'b'), 4) FROM DUAL;

456789
2345
1234
6789

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

SAVE AS
SAVE
UPDATE
MODIFY

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

FLOAT
NUMERIC
CHARACTER
All of these

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Introduction to SQL
The Microsoft Access wildcards are ____ and ____ .

question mark (?); asterisk (*)
asterisk (*); percent sign (%)
percent sign (%); underscore (_)
underscore(_); question mark (?)

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