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Problem in Left outer join

Author

Topic

m-arab
Starting Member

3 Posts

Posted - 2011-01-09 : 03:59:40

Hi,
I have tow tables like below:
Table1:
T1ID (unique)

Table2
FKT1ID (Foreign key to Table 1)
Property (It is optional)

I need to join tables and select randomly one of the properties of each entity in Table1, some entities dont have any property in Table2 and some have more than one. But I dont know how to write it correctly,
Help me plz

dearabi
Starting Member

2 Posts

Posted - 2011-01-09 : 05:29:02

Hi
I use This Code For Join Two Tables That I Need That Query

SELECT T1.fields[,T2.Fields]

FROM T1 left JOIN
T2 ON T1.T1ID= T2.T1ID

{
Also In Some Projects I Use This C# Code for Getting My Data (For Ex:For Getting The Name Of Company_Name As I Change The Name Of ShahrestanName that Are Located On COmboBox
Here IS My Code :

this.cBcompName.Items.Clear();
SqlCommand cmd = new SqlCommand("SELECT * FROM Tcompany where shahrestanName =N'" + cbShahrestan.Text + "'", conn);
this.conn.Open();
SqlDataReader rsBooks = cmd.ExecuteReader();
while (rsBooks.Read())
{
this.cBcompName.Items.Add(rsBooks.GetString(0));
}
rsBooks.Close();
this.conn.Close();

cBcompName.Enabled = true;

That Conn is My Connection_String And cBcompName is ComboBox that I use it for Store my Data,TCompant Is My Tables That I Want To Get Data(Common Data) And ShahrestanName Is Common Field.
}

Hope It Can Help You

m-arab
Starting Member

3 Posts

Posted - 2011-01-09 : 10:06:15

Thanks guy,
But it does not work correctly, I need to do all with T-SQL

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2011-01-09 : 13:02:25

[code]
SELECT t1.*,t2.Property
FROM Table1 t1
OUTER APPLY (SELECT TOP 1 Property
FROM Table2
WHERE FKT1ID = t1.T1ID
ORDER BY NEWID()
)t2
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

m-arab
Starting Member

3 Posts

Posted - 2011-01-10 : 03:44:24

Thanks Visakh, It works truely

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2011-01-10 : 11:17:11

Welcome

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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