用SQL语句查询数据库后,如何判断结果是否为空?(20分)

S

swallowljh

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• 2002-12-13

• #1

在Visual C#.net中用SQL语句查询数据库后,如何判断结果是否为空?

 

L

lldhz

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• 2002-12-13

• #2

ADOQuery.FindFrist;
ADOQuery.eof = True;
为空

 

U

ugvanxk

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• 2002-12-13

• #3

if adoquery.isempty then

 

L

lai_ke

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• 2002-12-13

• #4

query.isempty

 

P

pcgod

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• 2002-12-13

• #5

DataSet.RecordCount = 0

 

Y

yangpeng0622

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• 2002-12-28

• #6

以上都对

 

J

jeary

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• 2002-12-28

• #7

select sum(a+b) from test where number='&^&*' 怎麼判斷?
結果可不是為空的呀!

 

拾

拾荒者

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• 2002-12-28

• #8

SELECT COUNT(*) AS RCount FROM Table1 Where XXXXXX;
读一读 RCount 就知道了。（C# 我不会,只能给出 SQL ）