Oracle 中的 Unpivot Multiple 列不起作用

Question

我有一个 table 如下所示

Process_1	Tab1_Count	Tab1_Process_Count	Tab1_Status	Process_2	Tab2_Count	Tab2_Process_Count	Tab2_Status
Tab1_Process	123	123	等于	Tab2_Process	123	126	不等于

我正在尝试像下面这样取消上面的透视

表进程	Tab_Count	Process_Count	状态
Tab1_Process	123	123	等于
Tab2_Process	123	123	不等于

使用以下查询

SELECT * 
FROM
(       
SELECT 'Tab1' AS tab1_Process,
count(tb1.ID) AS tab1_count,
count(tbp1.ID) AS tab1_Process_count,
CASE WHEN count(tb1.ID)=count(tbp1.ID) THEN 'Equal' ELSE 'Not Equal' END AS Tab1_Status,
 'Tab2' AS tab2_Process,
count(tb2.ID) AS tab2_count,
count(tbp2.ID) AS tab2_Process_count,
CASE WHEN count(tb2.ID)=count(tbp2.ID) THEN 'Equal' ELSE 'Not Equal' END AS Tab2_Status
FROM table1 tb1
LEFT JOIN table1_process tbp1 ON tbp1.ID = tb1.ID
LEFT JOIN table2 tb2 ON tb2.ID = tb1.ID 
LEFT JOIN table1_process tbp2 ON tbp2.ID = tb2.ID
)
UNPIVOT
(
(TABLEPROCESS,STATUS)
FOR COUNT IN
(
(Tab1_Count,Tab2_Count) AS 'Tab_Count',
(Tab1_Process_Count,Tab2_Process_Count) AS 'Process_Count',
(Tab1_Status,Tab2_Status) AS 'STATUS'
)
)

但它给我错误 -- ORA-00907: 缺少右括号

根据 Alex Poole 的评论，尝试了 CROSS APPLY 方法

SELECT * 
    FROM
    (       
    SELECT 'Tab1' AS tab1_Process,
    count(tb1.ID) AS tab1_count,
    count(tbp1.ID) AS tab1_Process_count,
    CASE WHEN count(tb1.ID)=count(tbp1.ID) THEN 'Equal' ELSE 'Not Equal' END AS Tab1_Status,
     'Tab2' AS tab2_Process,
    count(tb2.ID) AS tab2_count,
    count(tbp2.ID) AS tab2_Process_count,
    CASE WHEN count(tb2.ID)=count(tbp2.ID) THEN 'Equal' ELSE 'Not Equal' END AS Tab2_Status
    FROM table1 tb1
    LEFT JOIN table1_process tbp1 ON tbp1.ID = tb1.ID
    LEFT JOIN table2 tb2 ON tb2.ID = tb1.ID 
    LEFT JOIN table1_process tbp2 ON tbp2.ID = tb2.ID
    )
    CROSS APPLY
    VALUES (
    
    (tab1_Process,Tab1_Count,Tab1_Process_Count,Tab1_Status),
    (tab2_Process,Tab2_Count,Tab2_Process_Count,Tab2_Status),
    
    ) (Process,Tab_Count,Process_Count,Status);

它在 SQL Server 中工作，但它给出 ORA-00903: invalid table name in oracle

我是 oracle 新手，请帮助

Answer 1

使用以下 UNPIVOT 查询

实现了预期结果

SELECT TABLEPROCESS,TAB_COUNT,PROCESS_COUNT,STATUS 
FROM
(       
SELECT 'Tab1' AS tab1_Process,
count(tb1.ID) AS tab1_count,
count(tbp1.ID) AS tab1_Process_count,
CASE WHEN count(tb1.ID)=count(tbp1.ID) THEN 'Equal' ELSE 'Not Equal' END AS Tab1_Status,
 'Tab2' AS tab2_Process,
count(tb2.ID) AS tab2_count,
count(tbp2.ID) AS tab2_Process_count,
CASE WHEN count(tb2.ID)=count(tbp2.ID) THEN 'Equal' ELSE 'Not Equal' END AS Tab2_Status
FROM table1 tb1
LEFT JOIN table1_process tbp1 ON tbp1.ID = tb1.ID
LEFT JOIN table2 tb2 ON tb2.ID = tb1.ID 
LEFT JOIN table1_process tbp2 ON tbp2.ID = tb2.ID
)
UNPIVOT
(
(TABLEPROCESS,TAB_COUNT,PROCESS_COUNT,STATUS)
FOR (t,c,p,s) 
 IN
 (
   (tab1_Process,Tab1_Count,Tab1_Process_Count,Tab1_Status),
   (tab2_Process,Tab2_Count,Tab2_Process_Count,Tab2_Status)

 )
);

Oracle 中的 Unpivot Multiple 列不起作用

Unpivot Multiple columns in Oracle is not working

oracle

oracle19c