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Introduction to SQL

Introduction to SQL
Which of the following is a SQL aggregate function?

JOIN
AVG
LEFT
LEN

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Introduction to SQL
Which of the following are the five built-in functions provided by SQL?

COUNT, SUM, AVG, MAX, MIN
SUM, AVG, MULT, DIV, MIN
SUM, AVG, MIN, MAX, NAME
SUM, AVG, MIN, MAX, MULT

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

2345
456789
6789
1234

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Introduction to SQL
________ was adopted as a national standard by ANSI in 1992.

DBase
SQL
Oracle
Microsoft Access

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

Nothing
TRUE
Hi
FLASE

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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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