Stored procedure error "ambiguous column"

hey guys im creating a stored procedure for search form in the asp.net im getting error, code is given below

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go

ALTER PROCEDURE [dbo].[sp_searchcustomervendordetails] 
 @customervendortype varchar(30)=Null,
    @customervendorid   varchar(30)=Null,
    @customervendorname varchar(30)=Null,
    @state              varchar(30)=Null,
    @city               varchar(30)=Null
AS
BEGIN
 SET NOCOUNT ON;
--if @customervendortype is not null and len(@customervendortype)=0 set @customervendortype = null
--if @customervendorid is not null and len(@cuatomervendorid)=0 set @customervendorid = null
--if @customervendorname is not null and len(@customervendorname)=0 set @customervendorname = null
--if @city is not null and len(@city)=0 set @city = null
--if @state is not null and len(@state)=0 set @state = null

    -- Insert statements for procedure here
SELECT     CustomerVendorDetails.customervendorid AS CustomerVendorID,CustomerVendorAddressDetails.customervendorname, Custom开发者_运维知识库erVendorAddressDetails.doorno, CustomerVendorAddressDetails.street, 
           CustomerVendorAddressDetails.city, CustomerVendorAddressDetails.state, CustomerVendorAddressDetails.country, 
           CustomerVendorAddressDetails.pincode,  CustomerVendorDetails.decidingauthority, 
           CustomerVendorDetails.landlineno1, CustomerVendorDetails.landlineno2, CustomerVendorDetails.faxno, ContactPersonDetails.contactno, 
           ContactPersonDetails.designation
FROM       CustomerVendorDetails INNER JOIN
           CustomerVendorAddressDetails ON CustomerVendorDetails.customervendorid = CustomerVendorAddressDetails.customervendorid INNER JOIN
           ContactPersonDetails ON CustomerVendorAddressDetails.customervendorid = ContactPersonDetails.customervendorid
WHERE      (@customervendortype is null or customervendortype like @customervendortype)
        or (@customervendorid is null or customervendorid like @customervendorid) 
        or (@customervendorname is null or customervendorname like @customervendorname)
        or (city is null or city like @city)
        or (state is null or state like @city)
END

im getting this error

Msg 209, Level 16, State 1, Procedure sp_searchcustomervendordetails, Line 34
Ambiguous column name 'customervendorid'.
Msg 209, Level 16, State 1, Procedure sp_searchcustomervendordetails, Line 35
Ambiguous column name 'customervendorname'

can any help me please

In general, you'll get an "ambiguous column name" error when you're performing a select that joins multiple tables together that have at least one column with the same name, and then you reference that column without prefixing it with the table.

So I your case I would assume that the customervendorname column appears in more than one table (perhaps CustomerVendorDetails and CustomerVendorAddressDetails?) so when you use it in the where clause you'll need to prefix it with the table name. I see in fact that you've already done this in the list of columns to be selected; you just need to do the same throughout the statement.

Thus

WHERE (@customervendortype is null or
       customervendortype like @customervendortype)

needs to become

WHERE (@customervendortype is null or
       CustomerVendorAddressDetails.customervendortype like @customervendortype)

and possibly similar changes for the other constraints.

The problem must be in this part:

or (@customervendorid is null or customervendorid like @customervendorid) 
        or (@customervendorname is null or customervendorname like @customervendorname)

You should check if you have customervendorid and customervendorname columns in your CustomerVendorAddressDetails and ContactPersonDetails tables

(@customervendorid is null or customervendorid like @customervendorid) or (@customervendorname is null or customervendorname like @customervendorname)

check these two lines ..

please post your table structures for customer and other table you are using. It will be easy to guess the error

replace customervendorid by CustomerVendorDetails.customervendorid and customervendorname by CustomerVendorAddressDetails.customervendorname in where condition will work.