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1.SELECTÓï¾ä´ÓÊý¾Ý¿âÖÐÑ¡È¡Êý¾Ý
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2.SELECT ¼ÓWHERE Óï¾ä
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3.SELECT ¼ÓAS Óï¾ä
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5.SELECT ORDER BYÓï¾ä
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2.UPDATE
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2.DELETE
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