On 2015-10-13 01:42:09 +0000, nmgjinan@126.com wrote:
> postgres=# insert into distributors values (1,'hgdb')
> postgres-# on conflict (did) where is_active do update set
> dname=EXCLUDED.dname;
> INSERT 0 1
> postgres=# select * from distributors ;
> did | dname | is_active
> -----+-------+-----------
> 2 | bbb | t
> 1 | hgdb | f
> (2 rows)
>
> postgres=#
>
> Why, when the where condition is true or false, the fields are change?
The WHERE above is parsed as parsed as the ON CONFLICT clause - where
it's just for specifying partial indexes and such. Put the WHERE after
the DO UPDATE and you'll be good.
Greetings,
Andres Freund
