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Oracle SQL Quick reference
Oracle SQL Quick Reference SELECT Query Statement SELECT [DISTINCT] {*, column [alias],…} FROM table WHERE condition(s)] ORDER BY {column, exp, alias} [ASC|DESC]] NOTE: Avoid using DISTINCT with large table as it first does sorting of all the rows and then eliminates duplicate rows, so need a full table scan and thus it’s very slow. ORDER […]
Jun 24th, 2009 | Filed under Oracle, Oracle SQL
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