SQL Cursorfetch錯誤

Question

我創建了這個函數來支持我的查詢生成器。當我測試這個函數時，我得到以下錯誤：

Cursorfetch：在INTO列表中聲明的變量的數量必須與選定列的變量相匹配。 也許有人能爲我糾正或告訴我我在做什麼錯在這裏？

USE [TestDB] 
GO 
/****** Object: UserDefinedFunction [dbo].[Acc_Query_CustID] 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 

    Alter FUNCTION [Acc_Query_CountryData] 
(
@Service_ID int --, @Postal_Start varchar(8). @Postal_Stop varchar(8), @AdrID int,  Type nvarchar(50), @Alias nvarchar(255)) 
      RETURNS nvarchar(800) 
    AS 
    BEGIN 
-- Declare the return variable here 
declare @Query nvarchar(800) 
set @Query = '' 
declare @country nvarchar(255) 
declare @postal_SP nvarchar(255) 
declare @postal_ST nvarchar(255) 
declare @adrID int 
declare @type nvarchar(50) 
declare @alias nvarchar(255) 
declare @postalQuery nvarchar(255) 
declare @TypeExcl bit 
declare @AliasExcl bit 
declare @AdridExcl bit 
---------------------------------------------------  
declare Accountring_Country1Cursor Cursor for 
     select Country from dbo.Accounting_Country1 where Service_ID = @Service_ID   
OPEN Accountring_Country1Cursor 
FETCH NEXT FROM Accountring_Country1Cursor 
INTO @country 
WHILE @@FETCH_STATUS = 0 
BEGIN 
set @postalQuery= ' AND (Country =' +@country    
FETCH NEXT FROM Accountring_Country1Cursor 
INTO @country 
--------------------------------------------------- 
--------------------POSTAL 
    declare Accounting_PostalCursor Cursor for 
    select POSTAL_START, isnull(POSTAL_STOP,'') as POSTAL_STOP from dbo.Accounting_Postal where Service_ID = @Service_ID and Country_ID = @country 
    OPEN Accounting_PostalCursor 
    FETCH NEXT FROM Accounting_PostalCursor 
    INTO @postal_SP, @postal_ST 
    WHILE @@FETCH_STATUS = 0 
    BEGIN 
     set @Query= @Query + ' AND (Postal '+ @postal_ST    
     FETCH NEXT FROM Accounting_PostalCursor 
     INTO @postal_SP, @postal_SP 
    END 
    CLOSE Accounting_PostalCursor 
    DEALLOCATE Accounting_PostalCursor 
    ------------------TYPE 
    declare Accounting_TypeCursor Cursor for 
    select Type from dbo.Accounting_Type where Service_ID = @Service_ID and Country_ID = @country 
    OPEN Accounting_PostalCursor 
    FETCH NEXT FROM Accounting_TypeCursor 
    INTO @type 
    WHILE @@FETCH_STATUS = 0 
    BEGIN 
     set @Query= @Query + ' AND (Type '+ (case(@TypeExcl) when 1 then ' NOT LIKE ' else ' LIKE ' end) + @type     
     FETCH NEXT FROM Accounting_TypeCursor 
     INTO @type 
    END 
    CLOSE Accounting_TypeCursor 
    DEALLOCATE Accounting_TypeCursor 
    -- <ADRP> <ADRD>.Adrid = 
    ------------------ALIAS 
    declare Accounting_AliasCursor Cursor for 
    select Alias from dbo.Accounting_Alias where Service_ID = @Service_ID and Country_ID = @country 
    OPEN Accounting_PostalCursor 
    FETCH NEXT FROM Accounting_TypeCursor 
    INTO @alias 
    WHILE @@FETCH_STATUS = 0 
    BEGIN 
     set @Query= @Query + ' AND (alias '+ (case(@AliasExcl) when 1 then ' NOT LIKE ' else ' LIKE ' end) + @alias      
     FETCH NEXT FROM Accounting_AliasCursor 
     INTO @alias 
    END 
    CLOSE Accounting_AliasCursor 
    DEALLOCATE Accounting_AliasCursor 

    ------------------ ADDRESSID 
    declare Accounting_AdridCursor Cursor for 
    select AdrID from dbo.Accounting_AdrID where Service_ID = @Service_ID and Country_ID = @country 
    OPEN Accounting_AdridCursor 
    FETCH NEXT FROM Accounting_AdridCursor 
    INTO @adrid 
    WHILE @@FETCH_STATUS = 0 
    BEGIN 
     set @Query=@Query + ' AND (adrid '+ (case(@adridExcl) when 1 then ' NOT LIKE ' else ' LIKE ' end) + @adrid  

     FETCH NEXT FROM Accounting_AdridCursor 
     INTO @adrid 
    END 
    CLOSE Accounting_AdridCursor 
    DEALLOCATE Accounting_AdridCursor 
--------------------------------------------------- 
---------------------------------------------------    
END 
CLOSE Accountring_Country1Cursor 
DEALLOCATE Accountring_Country1Cursor    
RETURN @Query 

END 

Answer 1

FETCH INTO子句中的列數應該與用於創建遊標的SQL語句中定義的列數相同。因此，對於Accountring_Country1Cursor你應該指定（並宣佈第一）2個變量：

FETCH NEXT FROM Accountring_Country1Cursor 
INTO @country, @isDelivery, @exclude 

或重新定義光標，所以它檢索一列：

declare Accountring_Country1Cursor Cursor for 
select Country 
from dbo.Accounting_Country1 
where Service_ID = @Service_ID 

Answer 2

檢查線路：

OPEN Accounting_PostalCursor 

您聲明「Accounting_TypeCursor」

declare Accounting_TypeCursor Cursor for 
select Type 
from dbo.Accounting_Type 
where Service_ID = @Service_ID and Country_ID = @country 

他們打開另一個光標：

OPEN Accounting_PostalCursor

與 「Accounting_AliasCursor」 一樣。