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Introduction to SQL

Introduction to SQL
The SQL statementSELECT SUBSTR('abcdefghij', INSTR('123321234', '2', 3, 2), 2) FROM DUAL;prints

ab
bc
23
gh

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Introduction to SQL
Microsoft Access has become ubiquitous, and being able to program in Access is a critical skill.

True
False

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

True
False

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

True
False

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Introduction to SQL
The SQL -92 wildcards are ____ and ____ .

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

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Introduction to SQL
The benefits of a standard relational language include which of the following?

All of these
Applications are not needed
Reduced training costs
Increased dependence on a single vendor

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