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|The statements select RIGHT('l wish I had attended the practice hours', 9) and select REVERSE(LEFT(REVERSE('I wish I had attended the practice hours'),9)) return/produce the same result.

|The statements select RIGHT('l wish I had attended the practice hours', 9) and select REVERSE(LEFT(REVERSE('I wish I had attended the practice hours'),9)) return/produce the same result.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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SQL. Write true or false.

INNER JOIN = CROSS JOIN WHERE <condition> is always TRUE. INNER JOIN combines two relations. It takes the second relation, and appends it to the end of the first relation. In Corelated Subqueries, subquery is executed independent of the outer query: subquery is executed only once. SELECT * FROM sys.Relations displays information about all the user-defined relations within a database. Given GENDER and STUDENT relations, SELECT Gender, FName, LName FROM GENDER LEFT OUTER JOIN STUDENT ON STUDENT.GenderCode = GENDER.GenderCode SELECT Gender,FName, LName FROM STUDENT RIGHT OUTER JOIN GENDER ON STUDENT.GenderCode = GENDER.GenderCode |The statements select RIGHT('l wish I had attended the practice hours', 9) and select REVERSE(LEFT(REVERSE('l wish I had attended the practice hours'),9)) return/produce the same result.
Transcribed Image Text:INNER JOIN = CROSS JOIN WHERE <condition> is always TRUE. INNER JOIN combines two relations. It takes the second relation, and appends it to the end of the first relation. In Corelated Subqueries, subquery is executed independent of the outer query: subquery is executed only once. SELECT * FROM sys.Relations displays information about all the user-defined relations within a database. Given GENDER and STUDENT relations, SELECT Gender, FName, LName FROM GENDER LEFT OUTER JOIN STUDENT ON STUDENT.GenderCode = GENDER.GenderCode SELECT Gender,FName, LName FROM STUDENT RIGHT OUTER JOIN GENDER ON STUDENT.GenderCode = GENDER.GenderCode |The statements select RIGHT('l wish I had attended the practice hours', 9) and select REVERSE(LEFT(REVERSE('l wish I had attended the practice hours'),9)) return/produce the same result.
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