DB2常用学习参考网站
http://www.ibm.com/developerworks/cn/data/library/techarticles/dm-0905db2versussoliddbsql/
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http://publib.boulder.ibm.com/infocenter/db2luw/v9r5/index.jsp?topic=/com.ibm.db2.luw.messages.sql.doc/doc/msql00312n.html
