sqlserver to oracle

SELECT     c.*, d .Organization_Name, d .ParentId, e.Roles_ID, e.Roles_Name
FROM
(    
    SELECT a.*, b.Organization_ID
    FROM
    (
        SELECT a.User_ID, MIN(User_Code) User_Code, MIN(User_Account) User_Account,
         MIN(User_Pwd) User_Pwd, MIN(User_Name) User_Name, MIN(User_Sex) User_Sex,
          min(User_IDcardNo) User_IDcardNo, MIN(Mobile) Mobile, MIN(DeleteMark) DeleteMark, 
          ztbm_id_s = STUFF (
                            (SELECT ',' + b.ZTBM_ID FROM TB_ZYM_UserZTBM b WHERE b.User_ID = a.User_ID FOR XML PATH('')),
                             1, 1, ''
                             )
        FROM Base_UserInfo a
        GROUP BY a.user_id
    ) a 
    LEFT OUTER JOIN dbo.Base_StaffOrganize b ON a.User_ID = b.User_ID) c 
    LEFT OUTER JOIN dbo.Base_Organization d ON c.Organization_ID = d .Organization_ID
    LEFT OUTER JOIN (
    SELECT b.*, a.User_ID FROM dbo.Base_UserRole a 
    INNER JOIN dbo.Base_Roles b ON a.Roles_ID = b.Roles_ID
) 
e ON e.User_ID = c.User_ID

SELECT     c.*, d .Organization_Name, d .ParentId, e.Roles_ID, e.Roles_Name
FROM
(    
    SELECT a.*, b.Organization_ID
    FROM
    (
        SELECT   a.User_ID, MIN(User_Code) User_Code, MIN(User_Account) User_Account, 
        MIN(User_Pwd) User_Pwd, MIN(User_Name) User_Name, MIN(User_Sex) User_Sex, min(User_IDcardNo) 
              User_IDcardNo, MIN(Mobile) Mobile, MIN(DeleteMark) DeleteMark
              ,(select wm_concat(b.ZTBM_ID) from TB_ZYM_UserZTBM b WHERE b.User_ID = a.User_ID ) ztbm_id_s
        FROM      Base_UserInfo a
        GROUP BY a.user_id
    ) a 
    LEFT OUTER JOIN Base_StaffOrganize b ON a.User_ID = b.User_ID
) c 
LEFT OUTER JOIN Base_Organization d ON c.Organization_ID = d .Organization_ID
LEFT OUTER JOIN (
    SELECT b.*, a.User_ID FROM Base_UserRole a 
    INNER JOIN Base_Roles b ON a.Roles_ID = b.Roles_ID
    ) 
e ON e.User_ID = c.User_ID

 ,wm_concat(pic_url) pic_url

,pic_url=STUFF((select '|'+pic_url from TB_ZYM_LOG_Image u where u.log_id=TB_ZYM_LOG_Image.log_id FOR xml path('')),1,1,'') 

1查询所有@  替换成：

2 SqlDatabase-->OracleDatabase

3 top

4 STUFF--->wm_concat

5 dbo.  去除

6 as 去除

7 case when

8 with  xxx as

9 cast 

10 isnull---》nvl

11 GETDATE()  ---》  sysdate

12 NEWID()-----SYS_GUID()

13 null和’’（空字符串）是一个意思     https://www.cnblogs.com/memory4young/p/use-null-empty-space-in-oracle.html

 14 oracle 没有 [字段]  这种表达方式 去掉 中括号