I'm seriously struggling with some easy stuff.
Currently I have 2 tables (tmp_jmo and persons)
table tmp_jmo
----------
ID ADRESS PERSON_ID
115 Street 1 (null)
120 Street 2 (null)
121 Street 3 (null)
Table persons
ID NAME PERSON_ID
----------
115 John 14
120 Ellen 27
121 Mark 114
Now I want to update the Peson_id
from tmp_jmo
with the values from person_id
(persons table)
In this case I've getting the error that there are to many values
Update tmp_jmo t SET person_id = persons.person_id where tmp_jmo.id = persons.id;
I've also tried to with temporary data but also failing.
I'm sorry to interrupt you with this kind of questions but it's ruining my day!
Many thanks!
In Standard SQL, you can do:
update tmp_jmo t
set person_id = (select p.person_id from persons p where tmp_jmo.id = p.id);
Many databases also support join
or from
in update
s, but that is database-specific syntax.
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