Sql server 使用逐个获取的值为product表添加日期。我需要光标吗?请检查下面的答案。这将是更容易的方法来满足您的要求。另外,如果返回的记录是多个的,你能给一个变量分配多个值吗?你能告诉我我的答案有什么问题吗?谢谢 CREATE PROCEDURE [dbo
Sql server 使用逐个获取的值为product表添加日期。我需要光标吗?请检查下面的答案。这将是更容易的方法来满足您的要求。另外,如果返回的记录是多个的,你能给一个变量分配多个值吗?你能告诉我我的答案有什么问题吗?谢谢 CREATE PROCEDURE [dbo,sql-server,sql-server-2008-r2,sql-update,nullable,isnull,Sql Server,Sql Server 2008 R2,Sql Update,Nullable,Isnull,使用逐个获取的值为product表添加日期。我需要光标吗?请检查下面的答案。这将是更容易的方法来满足您的要求。另外,如果返回的记录是多个的,你能给一个变量分配多个值吗?你能告诉我我的答案有什么问题吗?谢谢 CREATE PROCEDURE [dbo].[UpdateCTFamilyRules] AS BEGIN DECLARE @T_1 NVARCHAR(100) = NULL DECLARE @T_2 NVARCH
使用逐个获取的值为product表添加日期。我需要光标吗?请检查下面的答案。这将是更容易的方法来满足您的要求。另外,如果返回的记录是多个的,你能给一个变量分配多个值吗?你能告诉我我的答案有什么问题吗?谢谢
CREATE PROCEDURE [dbo].[UpdateCTFamilyRules]
AS
BEGIN
DECLARE @T_1 NVARCHAR(100) = NULL
DECLARE @T_2 NVARCHAR(100) = NULL
DECLARE @Fl NVARCHAR(100) = NULL
DECLARE @T1 NVARCHAR(100) = NULL
DECLARE @T2 NVARCHAR(100) = NULL
DECLARE @F NVARCHAR(100) = NULL
Select @T_1 = p.T1,
@T_2 = p.T2,
@Fl = p.F
from Product p
where p.Manufacturer_Name = 'Dell';
Select @T1 = r2.T1,
@T2 = r2.T2,
@F = r2.F
from Product p
join Rule1 r1 on p.Product_Code = r1.Product_Code
join Rule2 r2 on r1.MajorCode = r2.Product_Family
where p.Manufacturer_Name = 'Dell';
BEGIN
DECLARE @sqlCommand VARCHAR(8000)
DECLARE @Starter VARCHAR(100)
SET @Starter = 'SET '
SET @sqlCommand = 'UPDATE Product '
BEGIN
IF ( @T1 IS NOT NULL) AND ( @T1 <> @T_1 ) BEGIN SET @sqlCommand = @sqlCommand + @Starter + 'T1 = ''' + @T1 + '''' SET @Starter = ', ' END
IF ( @T2 IS NOT NULL) AND ( @T1 <> @T_2) BEGIN SET @sqlCommand = @sqlCommand + @Starter + 'T2 = ''' + @T2 + '''' SET @Starter = ', ' END
IF ( @F IS NOT NULL) AND ( @F <> @Fl ) BEGIN SET @sqlCommand = @sqlCommand + @Starter + 'F = ''' + @F + '''' SET @Starter = ', ' END
END
-- if any one column get updated in DB then automatically starter sets to , then execute dynamic sqlCommand else ignore..
IF (@Starter = ', ')
BEGIN
SET @sqlCommand = @sqlCommand + @Starter + ' Last_Modify_Date = ''' + CONVERT(VARCHAR(22),SYSDATETIME(),121) + ''''
SET @sqlCommand = @sqlCommand + ' from Product p
join Rule1 r1 on p.Product_Code = r1.Product_Code
join Rule2 r2 on r1.MajorCode = r2.Product_Family
WHERE p.Manufacturer_Name = ''' + 'Dell' + ''''
EXEC (@sqlCommand)
END
END
END
MERGE Prodcut AS TARGET
USING (
SELECT R2.Manufacturer_Name,
R2.T1,
R2.T2,
R2.F
FROM Product P
INNER JOIN Rule1 R1 ON P.Product_Code = R1.Product_Code
INNER JOIN Rule2 R2 ON R1.MajorCode = R2.Product_Family
) AS SOURCE ( Manufacturer_Name, T1, T2, F )
ON (TARGET.Manufacturer_Name = SOURCE.Manufacturer_Name) -- Match on condition
WHEN MATCHED AND (TARGET.T1 <> SOURCE.T1 OR
TARGET.T2 <> SOURCE.T2 OR
TARGET.F <> SOURCE.F) -- Find non matched columns
THEN
UPDATE SET TARGET.T1 = SOURCE.T1,
TARGET.T2 = SOURCE.T2,
TARGET.F = SOURCE.F -- Update non matched columns