Fitering values from table by first letter of last three letters

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SQL-Server-2005

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Hi in a table I have the Values like,

I want to filter the values by first letter of last three letters.

for an example
in a text box if i type 5 only "745568" should be displayed.
if I type 8 means 156823,156842has to be displayed..

if I use

select num from numbers where num like '%568%'

. It gives the desired result(filtering by last three letters). but have to get the values with one or two letters are entered.

Plz resolve this.

Thanks in advance.

Posted 12-Aug-11 0:28am

palraj001

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2 solutions

Solution 2

Uou can use regular expressions as explained here[^].

Posted 12-Aug-11 0:37am

Abhinav S

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Wendelius · Accepted Answer · 2011-08-12T00:33:00

Solution 1

This can be done in several ways. One version:

SQL

... where field like '%5__'

For more info about LIKE, see: http://msdn.microsoft.com/en-us/library/ms179859.aspx[^]

Posted 12-Aug-11 0:33am

Wendelius

Comments

palraj001 12-Aug-11 8:00am

Thanks mika. it helped me.

Wendelius 12-Aug-11 8:28am

You're welcome, glad it helped :)

palraj001 12-Aug-11 8:32am

but i need to be do this without a text box. how can i give in dropdownbox itself.

Wendelius 12-Aug-11 8:42am

Now I didn't quite understand. Do you have a dropdownbox where user can for example select the filter? If so, you can check what is for example the selectindex for the dropdownbox and based on that you can construct the query. For example if you have choices (in the dropdown):
- Third letter from the end is 8
- Third letter from the end is 5
Now if user selects the second item you can use the query like in the solution.

palraj001 12-Aug-11 9:02am

this how i did.
string myConnStr = ConfigurationManager.ConnectionStrings["testpal"].ConnectionString;

SqlConnection Conn = new SqlConnection(myConnStr);
Conn.Open();
string str;
DataTable dt = new DataTable("tbl");
if (TextBox1.Text.Length==1)
{
str = "SELECT num FROM numbers where num like '%" + TextBox1.Text + "__'";
}
else if (TextBox1.Text.Length == 2)
{
str = "SELECT num FROM numbers where num like '%" + TextBox1.Text.Substring(0,1) + "" + TextBox1.Text.Substring (1, 1) + "_'";
}
else
{
str = "SELECT num FROM numbers where num like '%__" + TextBox1.Text + "'";
}

SqlCommand comm = new SqlCommand(str, Conn);
SqlDataAdapter da = new SqlDataAdapter(comm);
da.Fill(dt);
Conn.Close();
DropDownList1.DataSource =dt;
DropDownList1.DataTextField="num";
DropDownList1.DataValueField="num";
DropDownList1.DataBind();

i type in textbox. result will be showed in dropdownbox.is there any possibility type values in dropdownbox itself?

Wendelius 12-Aug-11 11:52am

Sorry, I'm most likely a bit slow today. So do you want that user inputs a number to a dropdown (for example 5) then the user inputs another number to the dropdown (for example 8) and afer this you would like to query all the records having either 5 ot 8 in the string? If that's the case you can use an editable dropdown where you add items when user presses enter and when the user is finished you construct the query which would be for example something like:
... where field like '%5__' or field like '%8__'