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C# code:
SqlConnection con = new SqlConnection();
con.ConnectionString="server=127.0.0.1;database=test;uid=sa;pwd=2150255;";
con.Open();
string sql="select * from tabletest";
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String connectionString =""£»
dataAdapter = new SqlDataAdapter(selectCommand, connectionString);
SqlCommandBuilder commandBuilder = new SqlCommandBuilder(dataAdapter);
DataTable dt= new DataTable();
dataAdapter.Fill(dt);
bindingSource1.DataSource = dt;
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SQL code:
sql2005£¬sql2008
SELECT
±íÃû=CASE WHEN a.colorder = 1 THEN d.name ELSE '' END,
±í˵Ã÷=CASE WHEN a.colorder = 1 THEN isnull(f.value, '') ELSE '' END ,
×Ö¶ÎÐòºÅ=a.colorder ,
×Ö¶ÎÃ ......
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select ID,count(1) from TB group by ID having count(1)>10
SQL ......
select id,name,type from A union all
select id,name,type from B union all
select id,name,type from C union all where ???
----------------------------------------------------
......
UPDATE a
SET a.KeyNum=(SELECT COUNT(b.CI_ID) from myTab.dbo.CI_SinKey as b
where CONTAINS(b.SearchKey,a.KeyName)
)
from myKey.dbo.SearchKey as a
where KeyNum=0
Õâ¸öÊÇ´íÎóµÄÓï¾ä£¬ÏàÐÅ´ó¼Ò¿ÉÒÔ¿´¶® ......
a±íuid¡¢fidºÍb±íÖеÄid¹ØÁª£¬
ÈçºÎ²éѯa.uidºÍa.fid¶ÔÓ¦b±íÖеÄÏàÓ¦×ֶΡ£
SQL code:
select a.uid,a.fid,b.* from a,b where a.uid=b.id and a.fid=b.id
ÄãÊÇ˵b.idÊÇÓÉa.uid ºÍa.fid×é³ÉµÄ£¿
ÒªÊÇµÄ ......