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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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ƽ¾ù£ºselect avg(field1) as avgvalue from table1
×î´ó£ºselect max(field1) as maxvalue from table1
×îС£ºselect min(field1) as minvalue from table1
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