Is there any function for insert more than one row with trigger group by some result? - sql

Question

CREATE TABLE TABLE_1 (
ID NUMBER(10),
ID_DOCUMENT NUMBER(10),
ITEM_ID NUMBER(10),
SUPLLIER NUMBER(10)
);
Insert into TABLE_1 (ID, ID_DOCUMENT, ITEM_ID, SUPLLIER) Values (1, 1, 11, 25);
Insert into TABLE_1 (ID, ID_DOCUMENT, ITEM_ID, SUPLLIER) Values (2, 1, 87, 31);
Insert into TABLE_1 (ID, ID_DOCUMENT, ITEM_ID, SUPLLIER) Values (3, 1, 93, 31);
Insert into TABLE_1 (ID, ID_DOCUMENT, ITEM_ID, SUPLLIER) Values (4, 1, 41, 25);
Insert into TABLE_1 (ID, ID_DOCUMENT, ITEM_ID, SUPLLIER) Values (5, 1, 58, 40);
When I insert into table_1 I have to insert the result into two other tables:
create table doc
(
id number(10),
suplier number(10),
date_doc date
);
create table doc_rows
(
id number(10),
id_doc number(10), -- (references doc.id)
item_id number(10)
);
I want to create 3 new records in table doc (because into table_1 we have 3 unique suppliers) and for every new doc I have to insert his items into table doc_rows

Answer 1

-- Create tables
CREATE TABLE TABLE_1 (
ID int identity (1,1) ,
ID_DOCUMENT int,
ITEM_ID int,
SUPLLIER int
);
create table doc
(
id int identity (1,1),
suplier int,
date_doc date
);
create table doc_rows
(
id int identity (1,1),
id_doc int, -- (references doc.id)
item_id int
);
--Create triggers
GO
CREATE TRIGGER trgTABLE_1_Insert ON TABLE_1
FOR INSERT
AS
declare #SUPLLIER int
select #SUPLLIER = SUPLLIER from inserted
if not exists (select 1 from doc where suplier=#SUPLLIER )
Begin
insert into doc (suplier,date_doc)
select #SUPLLIER,GETDATE()
insert into doc_rows (id_doc,item_id)
SELECT (select id from doc where suplier = #SUPLLIER) id_doc ,
(SELECT top 1 ITEM_ID from TABLE_1 where SUPLLIER = #SUPLLIER) item_id
End
Go
-- insert statement
Insert into TABLE_1 ( ID_DOCUMENT, ITEM_ID, SUPLLIER) Values ( 1, 11, 25);
Insert into TABLE_1 ( ID_DOCUMENT, ITEM_ID, SUPLLIER) Values ( 1, 87, 31);
Insert into TABLE_1 ( ID_DOCUMENT, ITEM_ID, SUPLLIER) Values ( 1, 93, 31);
Insert into TABLE_1 ( ID_DOCUMENT, ITEM_ID, SUPLLIER) Values ( 1, 41, 25);
Insert into TABLE_1 ( ID_DOCUMENT, ITEM_ID, SUPLLIER) Values ( 1, 58, 40);
--fianl output
SELECT * from TABLE_1
SELECT * from doc
SELECT * from doc_rows