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Just SQL Part VI – Two Famous Pseudocolumns
A pseudocolumn is a column that looks like a column but really is not a column. What?! Stick around and find out what a pseudocolumn really is. James Koopmann explores two popular pseudocolumns, ROWID and ROWNUM, and their use.
This story continues at http://www.databasejournal.com/featu...le.php/3548391
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Thanks,
Linda
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