Question

I Want To search On Word(Text Box) in Selected Combo Box Item(field in DataBase) ,
my Store procedure is :

USE [QueueDB]
GO
/****** Object:  StoredProcedure [dbo].[SP_SelectDriver_ByNameAndField]    Script Date: 09/07/2012 17:20:24 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[SP_SelectDriver_ByNameAndField]
@Word nvarchar(100),
@Field nvarchar(100)
AS
BEGIN
select * from Driver where @Field like + N'%' + @Word + '%'
END

it does not work , what way you suggest to do this search method ?

Answer 1

Azize del,

ComboBox hamishe baiangare LookUp ast ke hamanande Table eist ke 2 sotoune Id va Describer darad. Agar gharar ast ke meghdare entekhabie ComboBox be StoredProcedure ferestade beshe, pishnahad mikonam az Id e Bind shode be SelectedValue e ComboBox estefade beshe. Nvarchar ro be SP ferestadan kare dorosti nist.

Dear Sir/Madam,

ComboBox is always a replacement for LookUp in Information Systems that is like a Table that has only two columns, Id and Describer. If you’re about to send the SelectedValue of ComboBox to your StoredProcedure, I suggest to send the bound value of SelectedValue as an integer to it. Then you have many options to write your query. Sending a LookUp value by using Nvarchar might have many side effects in the future of your application (it has many issues with collation in comparison).

Cheers

Change Code to this:

USE [QueueDB]
GO
/****** Object:  StoredProcedure [dbo].[SP_SelectDriver_ByNameAndField]    Script Date: 09/07/2012 17:20:24 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[SP_SelectDriver_ByNameAndField]  (
    @Word   Nvarchar(100)
,   @Field  TinyInt
)   As  Begin

    Select *
        From    Driver
        Where   Case    When    @Field      =   1
                And Column1     Like + N'%' + @Word + '%'
                Then    1
                When    @Field      =   2
                And Column2     Like + N'%' + @Word + '%'
                Then    1
                When    @Field      =   3
                And Column3     Like + N'%' + @Word + '%'
                Then    1
                Else    0
            End =   1
    ;

    Return  0;

END

Also you can use another way:

USE [QueueDB]
GO
ALTER PROCEDURE [dbo].[SP_SelectDriver_ByNameAndField]  (
    @Word   Nvarchar(100)
,   @Field  TinyInt
)   As  Begin

    Declare @Command    Nvarchar(Max);

    Select  @Command    =   N'
    Select *
        From    Driver
        Where   '
    +   Case    When    @Field      =   1
                Then    'Column1'
                When    @Field      =   2
                Then    'Column2'
                When    @Field      =   3
                Then    'Column3'
                Else    'DefaultColumn'
            End
    +   N'  Like + N''%'
    +   @Word
    +   N'%'''
    ;

    Execute (@Command);

    Return  0;

END