【发布时间】：2023-04-11 01:46:01
【问题描述】：
我使用 Oracle-To-SqlServer 迁移工具转换了下面的存储过程，但无法正确转换：
CREATE OR REPLACE PROCEDURE sp_Get_count(
ClientCountout OUT VARCHAR2
)
is
--Quarter VARCHAR2(20);
--ClientCount VARCHAR2(20);
--
--Quarterout VARCHAR2(20);
--ClientCountout VARCHAR2(20);
varQuarter VARCHAR2(20);
varStart_Date VARCHAR2(20);
varEnd_Date VARCHAR2(20);
CURSOR cr_client
IS
with dates as (
select to_date('1-Jan-2012', 'dd-mon-yyyy', 'nls_date_language =american') startdate
, to_date('31-Mar-2012', 'dd-mon-yyyy', 'nls_date_language =american') enddate
from dual
)
Select to_char(to_date(Start_Date,'dd-mon-yyyy'), 'YYYY-Q') Quarter, Start_Date, End_Date from
(select to_char(add_months(startdate, level*3-3), 'DD-MON-YYYY') Start_Date,
to_char(add_months(enddate, level*3-3), 'DD-MON-YYYY') End_Date
from dates
connect by level <= 10) ;
BEGIN
OPEN cr_client;
IF cr_client%ISOPEN
THEN
LOOP
FETCH cr_client
INTO varQuarter, varStart_Date,varEnd_Date ;
EXIT WHEN cr_client%NOTFOUND;
ClientCountout:= USER_BUILDER.get_Client_Count(varStart_Date ,varEnd_Date) ;
dbms_output.put_line('Client Count for: ' || varQuarter || ' is '|| ClientCountout);
END LOOP;
CLOSE cr_client;
END IF;
END;
以下是转换后的 SQL Server 存储过程：
CREATE PROCEDURE USER_BUILDER.sp_Get_count
@CLIENTCOUNTOUT varchar(max) OUTPUT
AS
/*Generated by SQL Server Migration Assistant for Oracle version 7.8.0.*/
BEGIN
SET @CLIENTCOUNTOUT = NULL
/*
* Quarter VARCHAR2(20);
* ClientCount VARCHAR2(20);
*
* Quarterout VARCHAR2(20);
* ClientCountout VARCHAR2(20);
*/
DECLARE
@VARQUARTER varchar(20),
@VARSTART_DATE varchar(20),
@VAREND_DATE varchar(20)
/*
* SSMA error messages:
* O2SS0208: Subquery factoring clause conversion is not supported.
* WITH dates
* (
* SELECT to_date('1-Jan-2012', 'dd-mon-yyyy', 'nls_date_language =american') startdate, to_date('31-Mar-2012', 'dd-mon-yyyy', 'nls_date_language =american') enddate
* FROM dual
* ), AS
DECLARE
CR_CLIENT CURSOR LOCAL FOR
WITH
h$cte AS
(
SELECT DATES.STARTDATE, DATES.ENDDATE, 1 AS LEVEL, CAST(row_number() OVER(
ORDER BY @@spid) AS varchar(max)) AS path
FROM DATES
UNION ALL
SELECT DATES.STARTDATE, DATES.ENDDATE, h$cte.LEVEL + 1 AS LEVEL, path + ',' + CAST(row_number() OVER(
ORDER BY @@spid) AS varchar(max)) AS path
FROM DATES, h$cte
WHERE LEVEL <= 10
)
SELECT ssma_oracle.to_char_date(ssma_oracle.to_date2(fci.START_DATE, 'dd-mon-yyyy'), 'YYYY-Q') AS QUARTER, fci.START_DATE, fci.END_DATE
FROM
(
SELECT TOP 9223372036854775807 ssma_oracle.to_char_date(dateadd(m, h$cte.LEVEL * 3 - 3, h$cte.STARTDATE), 'DD-MON-YYYY') AS START_DATE, ssma_oracle.to_char_date(dateadd(m, h$cte.LEVEL * 3 - 3, h$cte.ENDDATE), 'DD-MON-YYYY') AS END_DATE
FROM h$cte
ORDER BY h$cte.path
) AS fci */
OPEN CR_CLIENT
IF CURSOR_STATUS('local', N'CR_CLIENT') > -1
BEGIN
WHILE 1 = 1
BEGIN
FETCH CR_CLIENT
INTO @VARQUARTER, @VARSTART_DATE, @VAREND_DATE
/*
* SSMA warning messages:
* O2SS0113: The value of @@FETCH_STATUS might be changed by previous FETCH operations on other cursors, if the cursors are used simultaneously.
*/
IF @@FETCH_STATUS <> 0
BREAK
/*
* SSMA error messages:
* O2SS0556: Identifier USER_BUILDER.get_Client_Count cannot be converted because it was not resolved.
* This may happen because referenced object is missing from the database.
* It is recommended to fix and recompile all invalid objects in Oracle before attempting a conversion.
*
SET @CLIENTCOUNTOUT = USER_BUILDER.GET_CLIENT_COUNT */
PRINT 'Client Count for: ' + ISNULL(@VARQUARTER, '') + ' is ' + ISNULL(@CLIENTCOUNTOUT, '')
END
CLOSE CR_CLIENT
DEALLOCATE CR_CLIENT
END
END
如果您检查 SQL Server 转换的存储过程，您将看到“SSMA 错误消息”，详细信息为“O2SS0208：不支持子查询分解子句转换”，并且查询已被迁移工具注释。
谢谢
【问题讨论】：
-
描述存储过程应该做什么。提供样本数据和期望的结果。
-
实际上我已经获得了带有空表的数据库，存储过程。我现在的工作是转换存储过程并正确执行它们而不用担心数据。
-
你打算如何在没有任何数据的情况下测试执行？
标签： c# sql sql-server database-migration oracle12c