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 What is wrong with this select query

Author  Topic 

Abid

110 Posts

Posted - 2013-04-03 : 12:11:24
HI. I have a helping form, which appears on the leave event of the textbox from main form (SaleInfo). When this form is loaded so the Prod_Name from ProdInfo is loaded into Combobox (where combobox is set to AutoComplete).

On the form there is a button on which i have the following Query:

Dim selProd As String = "select * from ProdInfo where Prod_Name like '%" & ComboBox1.Text & "%'"
I want to load only that product into a DataGridView on the same helping form, which is select in Combobox. But when i press the button so it displays the entire table values. Please tell me that what is wrong with this query.

chadmat
The Chadinator

1974 Posts

Posted - 2013-04-03 : 12:17:42
Set a breakpoint on that line and make sure ComboBox1.Text is what you expect it to be.

-Chad
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Abid

110 Posts

Posted - 2013-04-03 : 21:34:21
yes i put a breakpoint on my query. When the break point occurs, so its equal to nothing. But then i put the breakpoint on the next line, right after the query, i.e.

 Dim selProd As String = "select * from ProdInfo where Prod_Name like '%" & ComboBox1.Text & "%'"
Dim cmdSql As New SqlCommand(selProd, cnSql)
cmdSql.CommandType = CommandType.Text
daSql.SelectCommand = cmdSql

daSql.Fill(dsSql, "ProdInfo")

dgvSalesPicker.DataSource = dsSql
dgvSalesPicker.DataMember = "ProdInfo"


This is what it appears in breakpoint.
selProd = "select * from ProdInfo where Prod_Name like '%Keyboard%'"
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LoztInSpace
Aged Yak Warrior

940 Posts

Posted - 2013-04-04 : 00:48:22
quote:
Originally posted by Abid

Please tell me that what is wrong with this query.


Apart from the SQL injection and performance issue you mean?
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Abid

110 Posts

Posted - 2013-04-04 : 05:41:21
Apart from SQL Injection.
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visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-04-04 : 06:07:28
are you looking at pattern serach or exact search? ie do you want records having word Keyboard in their name or do you want only keyboard record's detail?

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
https://www.facebook.com/VmBlogs
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Abid

110 Posts

Posted - 2013-04-04 : 08:28:25
This time i need only exact search.

But it would extremely applausable if you guide me for both.
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chadmat
The Chadinator

1974 Posts

Posted - 2013-04-04 : 12:51:30
The way it is now, you should be getting anything that contains the word "Keyboard". If you want exact match, change

LIKE '%Keyboard%'
to
='Keyboard'

-Chad
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visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-04-04 : 14:29:10
quote:
Originally posted by Abid

This time i need only exact search.

But it would extremely applausable if you guide me for both.



if you want exact search the statement should be


Dim selProd As String = "select * from ProdInfo where Prod_Name = '" & ComboBox1.Text & "'"


------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/
https://www.facebook.com/VmBlogs
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Abid

110 Posts

Posted - 2013-04-06 : 05:37:21
I think the problem is with, not clearing the DataSet. I'm just clearing the dataSet so the problem is solved.
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