What is the difference between single quotation mark (') and double quote ("")?

What is the difference between single quotation mark (') and double quote ("") in reports using SQL. When you use "xxx" and "xxx"? What is the difference of two of them?

Thank you.

http://download.Oracle.com/docs/CD/E11882_01/server.112/e10592/sql_elements008.htm#SQLRF51129
http://download.Oracle.com/docs/CD/E11882_01/AppDev.112/e10472/fundamentals.htm#LNPLS199

Edit

What is the difference of two of them?

In fact: it is better to simply forget double quotes ;)

Published by: hoek on October 23, 2009 21:22

Tags: Database

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