How to convert the hierarchical query of SQL Server (CTE) to Oracle?

How to convert the hierarchical query of SQL Server (CTE) to Oracle?

WITH cte (col1, col2) AS
(
SELECT col1, col2
FROM dbo. [tb1]
WHERE col1 = 12
UNION ALL
SELECT c.col1, c.col2
FROM dbo. [tb1] AS c INNER JOIN cte AS p ON c.col2 = p.col1
)
DELETE one
FROM dbo. [tb1] AS an INNER JOIN b cte
ON a.col1 = b.col1

Hello
Something like this maybe:

DELETE FROM dbo.tb1 a
 WHERE EXISTS (
  SELECT 1
    FROM dbo.tb1 b
  WHERE a.co11 = b.col1
      AND a.col2 = b.col2
   START WITH b.col1 = 12
  CONNECT BY b.col2 = PRIOR b.col1)

Although you need to do here is to check that CONNECT it BY SELECT, returns records you wait first, then the DELETION should work too.

Tags: Database

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Different output for the same query in SQL Server and Oracle
I have two tables table1 and table2

-table1 has two columns c1 int and varchar c2. There are no constraints added in it. It contains data as shown below

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-------------------
d 6
5 d
102 g
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----
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1
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table2 on table2.c1 = table1.c1 inner join (SELECT ROW_NUMBER() (any ORDER by ASC c1) AS c1 from table2)

output of SQL server
------------------------
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--------------------------------
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3 h 3
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release of Oracle
----------------------
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---------------------------------
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Why he behaves differently in oracle? Is there a way I can fix this problem in oracle?

Thank you
Jigs
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Same SQL Server will not be guaranteed to always get your data in an orderly manner if you exclude the order by clause, even if you think that there always display the data in an orderly manner.

Your solution is to add an order by clause, in the TWO databases, to force the order of the data output.

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