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select a.* from tbl1 a
left join tbl2 b
on a.key = b.key
where b.key is null
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select * into b
from a where 1<>1
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select * from table1 where time between time1 and time2
select a,b,c, from table1 where a not between ÊýÖµ1 and ÊýÖµ2
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(select a from tableA ) except (select a from tableB) except (select a from tableC)
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TRUNCATE TABLE table1
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ater database dbname collate SQL_Latin1_General_CP1_CI_AS
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alter table a alter column c2 varchar(50) collate SQL_Latin1_General_CP1_CI_AS
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select * from ±íÃû order by ÁÐÃû Collate Chinese_PRC_Stroke_ci_as
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select * from ±íÃû order by ÁÐÃû Collate Chinese_PRC_CS_AS_KS_WS
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SELECT TOP 100 PERCENT o.name AS ±íÃû
from dbo.syscolumns c INNER JOIN
      dbo.sysobjects o ON o.id = c.id AND objectproperty(o.id, N'IsUserTable') = 1 AND
      o.name <> 'dtproperties' LEFT OUTER JOIN
      dbo.sysproperties m ON m.id = o.id AND m.smallid = c.colorder
WHERE (c.colid = 1)
ORDER BY o.name, c.colid
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SELECT TOP 100 PERCENT c.colid AS ÐòºÅ, o.name AS ±íÃû, c.name AS ÁÐÃû,
      t.name AS ÀàÐÍ, c.length AS ³¤¶È, c.isnullable AS ÔÊÐí¿Õ,
      CAST(m.[value] AS Varchar(100)) AS ˵Ã÷
from dbo.syscolumns c INNER JOIN
      dbo.sysobjects o ON o.id = c.id A