Update or merge it with the return data
Hello, I want to do an update in a single statement, and select (I want to get the data and update a field in one of the tables involved with a timestamp), I tried this:
merge into table t
using (SELECT ... a long and complex select...) e
on (e.ID = t.ID)
When matched then
update the value t.ts = systimestamp
e return
It does not work because his return does not seem possible with the merger, he did the update but I get no data...
With an update, I tried:
Update
(
SELECT...) e
Aliens set = systimestamp
And I get ORA-01779: cannont change a column that maps to a table of key-preserver nonkey.
The select is complex with many paintings and selects involved and more than 20 KB of text only select... and this isn't mine so I want a solution that does not need to change the internal selection if possible.
Any ideas? Sorry for my limited knowledge of sql :-(
No, you did not read what I said. The RETURNING clause allows you to capture the details of the update table. You may not have the details of the complex query that you use to determine the return lines. There is no way in SQL to a single statement that updates a table and queries data from other tables at the same time.
The best you're going to manage is to update the data, turning the ID (or regardless of the primary key is appropriate) and then query the query data complex where once again the ID in your collection. However, it's really messy. What US the real purpose of all this?
Tags: Database
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So here's the table data and sample to create.
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Now,.
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Hello
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