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EXEC sp_addumpdevice 'disk', 'testBack', 'c:\mssql7backup\MyNwind_1.dat'
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BACKUP DATABASE pubs TO testBack
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7¡¢ËµÃ÷£ºÌí¼ÓÖ÷¼ü£º Alter table tabname add primary key(col)
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8¡¢ËµÃ÷£º´´½¨Ë÷Òý£ºcreate [unique] index idxname on tabname(col….)
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