Re: Insert data in two columns same table - Mailing list pgsql-general

On 03/16/2016 07:07 PM, drum.lucas@gmail.com wrote:
>
>
>
>
>     I see a lot of other problems: you have 3 independet tables. Your 2
>     queries
>     (selects) returns 2 independet results, you can't use that for
>     insert into the
>     3rd table. And i think, you are looking for an update, not insert.
>     So you have
>     to define how your tables are linked together (join).
>
>     Can you explain how these tables are linked together?
>
>
>
>
> Hi Andreas!
>
> Well...
>
> There are two tables that I need to get data from(dm.billables /
> public.ja_mobiusers), and a third table (dm.billables_links) that I need
> to insert data from those two tables.
>
> The table dm.billables has four (important) columns:
>
> *billable_id / customer_id / role_id / mobiuser_id*
>
> I wanna add data there. The data is not there yet, so it's not an UPDATE.
>
> *1 -* select the billable_id: (SELECT1)
> SELECT billable_id FROM junk.wm_260_billables2 WHERE info ilike '%Alisha%'
>
> *2 -* select the mobiuser_id: (SELECT2)
> SELECT id FROM public.ja_mobiusers WHERE name_first LIKE 'Alisha%' AND
> name_last LIKE 'Dadryl%'
>
> *3 -* Insert those two data into the dm.billables_links table (EXAMPLE):
> INSERT INTO dm.billables_links (billable_id, mobiuser_id) VALUES
> (SELECT1, SELECT2);
>
>
>     CREATE TABLE
>     *billables*
>          (
>              billable_id BIGINT DEFAULT
>     "nextval"('"dm"."billables_billable_id_seq"'::"regclass") NOT
>              NULL,
>              account_id BIGINT NOT NULL,
>              code CHARACTER VARYING(64) NOT NULL,
>              info "TEXT",
>              CONSTRAINT pk_billables PRIMARY KEY (billable_id),
>              CONSTRAINT uc_billable_code_unique_per_account UNIQUE
>     ("account_id", "code"),
>          );
>     CREATE TABLE
>     *billables_links*
>              (
>                  billable_link_id BIGINT DEFAULT
>     "nextval"('"dm"."billables_links_billable_link_id_seq"'::
>                  "regclass") NOT NULL,
>                  billable_id BIGINT NOT NULL,
>                  customer_id BIGINT,
>                  role_id BIGINT,
>                  mobiuser_id BIGINT,
>                  CONSTRAINT pk_billables_links PRIMARY KEY
>     (billable_link_id),
>                  CONSTRAINT fk_billable_must_exist FOREIGN KEY
>     (billable_id) REFERENCES billables
>                  (billable_id),
>                  CONSTRAINT cc_one_and_only_one_target CHECK
>     ((((("customer_id" IS NOT NULL))::INTEGER + (
>                  ("role_id" IS NOT NULL))::INTEGER) + (("mobiuser_id" IS
>     NOT NULL))::INTEGER) = 1)

Would it not be easier if instead of customer_id, role_id, mobiuser_id
you had id_type('customer', 'role', 'mobi') and user_id(id). Then you
could eliminate the CHECK, which as far as I can see is just restricting
entry to one user id anyway.

>              );
>     CREATE TABLE
>     *ja_mobiusers*
>                  (
>                      id BIGINT DEFAULT
>     "nextval"('"ja_mobiusers_id_seq"'::"regclass") NOT NULL,
>                      clientid BIGINT DEFAULT 0,
>     [...]
>                      PRIMARY KEY (id),
>                      CONSTRAINT fk_account_must_exist FOREIGN KEY
>     (clientid) REFERENCES ja_clients (id),
>                  );
>
>
>
>
>
>


--
Adrian Klaver
adrian.klaver@aklaver.com