SQL Server T-SQL：使用存储过程自动重新执行SQL报告

Question

目标：创建一个存储过程来自动执行此报告，以便当运行execute NameOfStoredProc时，它会执行所有3个块并返回块3中的查询

对于表格，我希望它是基于getdate()的动态。

（我没有张贴实际的表元素和记录，但如果需要，我可以弥补一些B/C的实际数据是敏感的）

• 数据库：FY1516
• 从表：v_all_claim（实际上是视图）进入表
• ：March2017_Payments

下面是我手工执行生成报告的代码。

块1：

--creates payment table 
SELECT Recipient_ID, DOP, Provider_ID, program_code, poverty_code 
INTO FY1516..March2017_Payments 
FROM FY1516..v_all_Claim 
WHERE amount <> 0 
    AND DOP BETWEEN '20170301' AND '20170331' 

2座：

-- add one column to the table created in block 1, sets default value to '' and update to Y 
-- if certain constraints are met 
ALTER TABLE FY1516..March2017_Payments 
    ADD TITLE21_Flag varchar(1); 
GO 

UPDATE FY1516..March2017_Payments 
SET TITLE21_Flag = '' 
GO 

UPDATE FY1516..March2017_Payments 
SET TITLE21_Flag = 'Y' 
WHERE program_code IN ('A', 'B', 'C') 

3座与SELECT语句被复制到Excel：

SELECT * 
FROM FY1516..March2017_Payments 

我尝试迄今：

• @start和@end是between @start and @end
• @previousMonth给比上月
• @previousMonthYear的前3个字母给比上月

希望能@previousMonth +@previousMonthYear +"_Payments"可以是表名

USE FY1516 

CREATE PROCEDURE NameOfStoredProc 
AS 
    DECLARE @start VARCHAR(8), @end VARCHAR(8), 
      @previousMonth VARCHAR(3), @previousMonthYear VARCHAR(4); 

    SET @start = CONVERT(VARCHAR(8), DATEADD(MONTH, DATEDIFF(MONHT, 0, GETDATE()) - 1, 0), 112) 
    SET @end = CONVERT(VARCHAR(8), DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE()) - 1, -1), 112) 

    SET @previousMonth = LEFT(DATENAME(MONTH, DATEADD(MONTH, -1, GETDATE())), 3) 
    SET @previousMonthYear = YEAR(DATEADD(MONTH, -1, GETDATE())) 

的YYYY

Answer 1

你可以通过com将块1和块2合并为一个语句：

--creates payment table 
Select Recipient_ID 
, DOP 
, Provider_ID 
,program_code 
,poverty_code 
,TITLE21_Flag = CASE WHEN program_code IN ('A','B','C') THEN 'Y' ELSE '' END 
INTO FY1516..March2017_Payments 
FROM FY1516..v_all_Claim 
WHERE amount <> 0 and DOP between '20170301' and '20170331' 

然后，在您的proc中，可以使用动态SQL创建表。这里有一个例子：

Create procedure NameOfStoredProc 
AS 
declare @start varchar(8) 
, @end varchar(8) 
,@previousMonth varchar(3) 
,@previousMonthYear varchar(4); 

set @start = convert(varchar(8),dateadd(month, datediff(month,0,getdate())-1,0),112) 
set @end = convert(varchar(8),DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, -1),112) 
set @previousMonth = left(datename(month, dateadd(month,-1,getdate())), 3) 
set @previousMonthYear = year(dateadd(month,-1,getdate())) 

DECLARE @SQLString NVARCHAR(MAX) = 'CREATE TABLE ' + @previousMonth +@previousMonthYear +'_Payments (ColA int)' 
EXECUTE sp_executesql @SQLString 

你会想与你的实际列名和数据类型来代替(ColA int)。

编辑：

下面是一个示例，其中包括块1/2到存储过程。它首先检查表的存在，然后运行相应的SELECT查询。

CREATE PROCEDURE NameOfStoredProc 
AS 
begin 
declare @start varchar(8) 
, @end varchar(8) 
,@previousMonth varchar(3) 
,@previousMonthYear varchar(4); 

set @start = convert(varchar(8),dateadd(month, datediff(month,0,getdate())-1,0),112) 
set @end = convert(varchar(8),DATEADD(MONTH, DATEDIFF(MONTH, -1, GETDATE())-1, -1),112) 
set @previousMonth = left(datename(month, dateadd(month,-1,getdate())), 3) 
set @previousMonthYear = year(dateadd(month,-1,getdate())) 

DECLARE @SQLString NVARCHAR(MAX) = 
'IF OBJECT_ID('''+@previousMonth +@previousMonthYear +'_Payments'', ''U'') IS NOT NULL 
BEGIN 
    print 1 
    INSERT INTO FY1516..'+ @previousMonth +@previousMonthYear +'_Payments 
    Select Recipient_ID 
    , DOP 
    , Provider_ID 
    ,program_code 
    ,poverty_code 
    ,TITLE21_Flag = CASE WHEN program_code IN (''A'',''B'',''C'') THEN ''Y'' ELSE '''' END 
    FROM FY1516..v_all_Claim 
    WHERE amount <> 0 and DOP between ''20170301'' and ''20170331'' 
END 
ELSE 
BEGIN 
print 2 
    Select Recipient_ID 
    , DOP 
    , Provider_ID 
    ,program_code 
    ,poverty_code 
    ,TITLE21_Flag = CASE WHEN program_code IN (''A'',''B'',''C'') THEN ''Y'' ELSE '''' END 
    INTO FY1516..'+ @previousMonth +@previousMonthYear +'_Payments 
    FROM FY1516..v_all_Claim 
    WHERE amount <> 0 and DOP between ''20170301'' and ''20170331'' 
END 
' 
EXECUTE sp_executesql @SQLString 

SET @SQLString = 'SELECT * FROM '+@previousMonth +@previousMonthYear +'_Payments' 
EXECUTE sp_executesql @SQLString 
END