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Introduction to SQL

Introduction to SQL
What is the full form of SQL?

Structured Query Language
None of these
Structured Query List
Simple Query Language

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Introduction to SQL
Which of the following must be enclosed in double quotes?

Dates
All of these
Column Alias
Strings

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

6789
2345
456789
1234

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Introduction to SQL
What operator tests column for the absence of data?

IS NULL operator
EXISTS operator
None of these
NOT operator

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Introduction to SQL
'AS' clause is used in SQL for

Projection operation.
Rename operation.
Join operation.
Selection operation.

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Introduction to SQL
The wildcard asterisk (*) is the SQL-92 standard for indicating "any sequence of characters."

False
True

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