Oracle合并到…当不匹配时插入…-我可以使用别名吗

Question

Here a simplified table example:

MAGIC_TABLE
titi | tata
-----------
val1 | magic1
val2 | magic2
val3 | magic1
val4 | magic1
val5 | magic2

What I want to achieve is that ->

For every row that have tata = 'magic2' and some value in titi if it does not exist a 'magic1' row with the same titi value then I should add a row with titi.value and 'magic1'

Here is a simplified version of my SQL oracle query that I am working on :

merge into MAGIC_TABLE magic
using (
    with UNMAGIC_TABLE as (
        select titi, tata from MAGIC_TABLE
        and tata='magic1'
    )
    SELECT titi, tata from UNMAGIC_TABLE 
) really_unmagic
on 
(
  magic.titi = really_unmagic.titi
  magic.tata = really_unmagic.tata
  and magic.tata='magic2'
) 
when not matched then insert (titi, tata) 
values 
(magic.titi, 'magic1');

Somehow I keep getting this error :

ORA-38101: Invalid column in the INSERT VALUES Clause: "MAGIC"."TITI"

So I was wondering if it is a syntax issue around aliases? What did I do wrong there ?

EDIT : It's an inattention error, as George Joseph pointed out I have to use unreally_magic to make it work, since when it's not matched I do not have lines from magic

Answer 1

If I were you, I'd write that merge statement like so:

MERGE INTO magic_table tgt
USING (SELECT titi,
              'magic1' tata
       FROM   magic_table
       WHERE  tata = 'magic2') src
  ON (tgt.titi = src.titi AND tgt.tata = src.tata)
WHEN NOT MATCHED THEN
  INSERT (tgt.titi,
          tgt.tata)
  VALUES (src.titi,
          src.tata);

Answer 2

I don't know why but it seems I had to use really_unmagic to make it work, so I also had to change both where clause to have the correct wanted data in values . But I still have no idea why the first query would not work.

merge into MAGIC_TABLE magic
using (
    with UNMAGIC_TABLE as (
        select titi, tata from MAGIC_TABLE
        and tata='magic2'
    )
    SELECT titi, tata from UNMAGIC_TABLE 
) really_unmagic
on 
(
  magic.titi = really_unmagic.titi
  magic.tata = really_unmagic.tata
  and magic.tata='magic1'
) 
when not matched then insert (titi, tata) 
values 
(really_unmagic.titi, 'magic1');