Oracle Plus (+) 连接到 ANSI 转换

我正在进行从 Oracle 到 SQL 数据仓库 Azure 的仓库迁移，并遇到了此查询的问题。

来自 Oracle 的原始查询 - 它返回1872520 rows.

SELECT
 *
FROM
 STG_REV_APPORTION_CSC_NO t1,
 STG_SEP_VL t2,
 STG_SEP_VL t3
WHERE
 t3.BUSINESS_DATE(+)    = t1.BUSINESS_DATE
AND t3.CSC_APP_NO(+)     = t1.CSC_APP_NO
AND t3.JOURNEY_NO(+)     = t1.JOURNEY_NO
AND t3.PURSE_TXN_CTR(+)  = t1.PURSE_TXN_CTR
AND t2.BUSINESS_DATE(+) = t1.BUSINESS_DATE
AND t2.CSC_APP_NO(+)    = t1.CSC_APP_NO
AND t2.JOURNEY_NO(+)    = t1.JOURNEY_NO
AND
 (
   t2.TRIP_NO(+) + 1
 )
 = t1.TRIP_NO
AND
 (
   t2.MSG_TYPE_CD(+)  = 13070
 AND t3.MSG_TYPE_CD(+) = 4357
 );

从中获取线索文档 http://docs.oracle.com/cd/B19306_01/server.102/b14200/queries006.htm，我尝试将查询重写为 ANSI：

SELECT COUNT(*) 
 FROM STG_REV_APPORTION_CSC_NO t1
 RIGHT OUTER JOIN STG_SEP_VL t3 ON t3.BUSINESS_DATE = t1.BUSINESS_DATE
 AND t3.CSC_APP_NO     = t1.CSC_APP_NO
 AND t3.JOURNEY_NO     = t1.JOURNEY_NO
 AND t3.PURSE_TXN_CTR  = t1.PURSE_TXN_CTR
 RIGHT OUTER JOIN STG_SEP_VL t2 ON t2.BUSINESS_DATE = t1.BUSINESS_DATE
AND t2.CSC_APP_NO   = t1.CSC_APP_NO
AND t2.JOURNEY_NO    = t1.JOURNEY_NO 
AND (t2.TRIP_NO + 1)  = t1.TRIP_NO
WHERE t2.MSG_TYPE_CD = 13070 AND t3.MSG_TYPE_CD = 4357

它返回零行。 ANSI 版本应该适用于 oracle 实例 - 它也返回零行。

然后我尝试使用 Toad 上的重构选项将 plus join 转换为 ANSI。我得到以下内容

SELECT *
  FROM STG_SEP_VL  T2
       RIGHT OUTER JOIN STG_REV_APPORTION_CSC_NO T1
           ON     (T2.BUSINESS_DATE = T1.BUSINESS_DATE)
              AND (T2.CSC_APP_NO = T1.CSC_APP_NO)
              AND (T2.JOURNEY_NO = T1.JOURNEY_NO)
       RIGHT OUTER JOIN STG_SEP_VL T3
           ON     (T3.PURSE_TXN_CTR = T1.PURSE_TXN_CTR)
              AND (T3.BUSINESS_DATE = T1.BUSINESS_DATE)
              AND (T3.CSC_APP_NO = T1.CSC_APP_NO)
              AND (T3.JOURNEY_NO = T1.JOURNEY_NO)
 WHERE     ( ( (T2.TRIP_NO                                             /*(+)*/
                          ) + 1) = T1.TRIP_NO)
       AND ( ( (T2.MSG_TYPE_CD                                         /*(+)*/
                              ) = 13070) AND ( (T3.MSG_TYPE_CD         /*(+)*/
                                                              ) = 4357));

现在，该查询应该在 Oracle 上运行并返回相同数量的行，然后才能在 SQL Server 上运行它。但事实并非如此——它返回零行。

I looked at the explain plan for both of these queries. Here is how (+) join plan looks like:

Here is how ANSI version of this query looks like:

我错过了什么吗？

这是我想出的：

SELECT *
  FROM stg_rev_apportion_csc_no t1 
  LEFT JOIN stg_sep_vl t3
         ON t1.business_date = t3.business_date AND
            t1.csc_app_no = t3.csc_app_no       AND
            t1.journey_no = t3.journey_no       AND
            t1.purse_txn_ctr = t3.purse_txn_no  AND
            4357 = t3.msg_type_cd
  LEFT JOIN stg_sep_vl t2
         ON t1.business_date = t2.business_date AND
            t1.csc_app_no = t2.csc_app_no       AND
            t1.journey_no = t2.journey_no       AND
            t1.trip_no = t2.trip_no + 1         AND
            13070 = t2.msg_type_cd;

表 t2 和 t3 是外部联接到 t1 的，因此您可以首先列出 t1 并执行左联接，或者首先列出 t2 和 t3 并执行右联接。