I'm looking to have a stored procedure that will:
run through Table A and retrieve all IDs.
insert into Table B all IDs (loop) but also static values which aren't found in Table A.
How do I approach this?
CREATE OR REPLACE PROCEDURE TEST AS
BEGIN
select ID from TABLE A;
INSERT INTO TABLE B
(
created_date,
created_by,
ID
)
VALUES ('sysdate', '1', 'RESULTS FROM SELECT QUERY');
END TEST;
Not sure how to merge static data ('sysdate' and '1') with results from a query.
No need for 2 separate queries. This should work with INSERT INTO SELECT:
INSERT INTO TABLEB
(
created_date,
created_by,
ID
)
SELECT 'sysdate', '1', id
FROM TABLEA
Related
I am trying to insert data using select statement. The table which I am inserting is having foreign key and it is sequence ID. How do I accomplish this? Because if I insert the sequence key in associated table first then how do I get the list of all the sequence ID to insert into the table.
Please note I am using insert with select statement so is there way to accomplish this without using cursor?
I think you can extract sequence value and then re-use it as many times as you want:
DECLARE #NextValue INT
SELECT #NextValue = NEXT VALUE FOR MySequence
SELECT NextValue = #NextValue
INSERT INTO PrimaryTable(PK_ID) VALUES (#NextValue);
INSERT INTO SecondaryTable(FK_ID) VALUES (#NextValue);
Here what I have tried.
DECLARE #MyTabVaR TABLE
(
FOREIGNKEY_ID INT,
COMMON_COL INT
);
INSERT INTO #MyTabVaR
SELECT NEXT VALUE FOR DBO.MY_SEQ,COMMON_COL FROM another_table2
INSERT INTO actual_table
SELECT FOREIGNKEY_ID FROM #MyTabVaR
INSERT INTO another_table
SELECT * FROM copy_table C
LEFT JOIN actual_table A
ON C.COMMON_COL=A.COMMON_COL
WHERE A.FOREIGNKEY_ID IS NOT NULL
I want to insert into table from select statement but it is required that insert only happens when select returns valid rows. If no rows return from select, then no insertion happens.
insert into products (name, type) select 'product_name', type from prototype where id = 1
However, the above sql does insertion even when select returns no rows.
It tries to insert NULL values.
I know the following sql can check if row exists
select exists (select true from prototype where id = 1)
How to write a single SQL to add the above condition to insert to exclude the case ?
You are inserting the wrong way. See the example below, that doesn't insert any row since none matches id = 1:
create table products (
name varchar(10),
type varchar(10)
);
create table prototype (
id int,
name varchar(10),
type varchar(10)
);
insert into prototype (id, name, type) values (5, 'product5', 'type5');
insert into prototype (id, name, type) values (7, 'product7', 'type7');
insert into products (name, type) select name, type from prototype where id = 1
-- no rows were inserted.
I am sorry if my question is not clear or my query is not sufficient to help. I have a procedure that has multiple if/else statement. My goal is to insert one row if that if statements meets the criteria else go further. Something like this:
create or replace procedure abc.xyz
( i_name varchar2
,number number,
sections varchar2)
...
max_date date;
min_date date;
...
if(sum=0)
insert into abc_table
(id,name,number,sections,description,date,amount,price,source,latest_date)
select user_seq.nextval,name,number,max_date,amount,0
,'xyz',trunc(sysdate))
from abc_table x
where x.name=i_name
and x.number=i_name
and x.section=i_section;
elseif (sum>0)
insert into abc_table
(id,name,number,sections,description,date,amount,price,source,latest_date)
select user_seq.nextval,name,number,max_date,amount,0
,'xyz',trunc(sysdate))
from abc_table x
where x.name=i_name
and x.number=i_name;
and x.section=i_section;
when i run my procedure, to insert the calculated value , the values are correct but so many rows were inserted. How can I prevent from multiple insert and make only one row insert ?
You are doing it wrong.
According to the Oracle documentation, The syntax for the Oracle INSERT statement when inserting a single record using the VALUES keyword is:
INSERT INTO table
(column1, column2, ... column_n )
VALUES
(expression1, expression2, ... expression_n );
But the syntax for the Oracle INSERT statement when inserting multiple records using a SELECT statement is:
INSERT INTO table
(column1, column2, ... column_n )
SELECT expression1, expression2, ... expression_n
FROM source_table
[WHERE conditions];
reference: https://www.techonthenet.com/oracle/insert.php
from the link i shared:
If you don't want to insert duplicate:
INSERT INTO clients
(client_id, client_name, client_type)
SELECT 10345, 'IBM', 'advertising'
FROM dual
WHERE NOT EXISTS (SELECT *
FROM clients
WHERE clients.client_id = 10345);
I want move rows from one table to another (in order to move unused data to historic storage).
How to do this in most clever way?
I found such solutions but looks like it is not working for Oracle dialect
INSERT dbo.CustomersInactive (
CustomerID,
FirstName,
LastName
) SELECT
CustomerID,
FirstName,
Lastname
FROM (
DELETE dbo.CustomersActive
OUTPUT
DELETED.CustomerID,
This solution seems working:
DECLARE
TYPE CustomerSet IS TABLE OF CustomersActive%ROWTYPE;
inactive CustomerSet;
BEGIN
delete from CustomersActive returning CustomerID,FirstName,Lastname bulk collect into inactive;
FOR i IN inactive.FIRST .. inactive.LAST LOOP
insert into CustomersInactive values (inactive(i).CustomerID,inactive(i).FirstName,inactive(i).Lastname);
END LOOP;
END;
I hope this is the case you need:
--init objects
create table active_cust
(cust_id integer,
name varchar2(100 char)
);
create table inactive_cust as
select *
from active_cust
where 1=2;
--init data
insert into active_cust values (1, 'Przemo');
insert into active_cust values (2,'Pan Miecio');
insert into active_cust values (3,'Pan Franio');
insert into inactive_cust values (3,'Pan Franio');
--merge active and inactive
merge into inactive_cust dest
using (select * from active_cust) srce
on (srce.cust_id = dest.cust_id)
when not matched then insert values
(srce.cust_id, srce.name )
--here specify conditions on which customer is being
--accounted as inactive
/*where srce.some_status_date < sysdate - 100 */
;--only two rows merged as we have >Pan Franio< already in a list of inactive customers!
--now as we have all inactive customers in inactive_cust table, delete from active_cust where id is present in inactive_cust
delete from active_cust ac
where ac.cust_id in (select cust_id
from inactive_cust);
drop table active_cust;
drop table inactive_cust;
Is it Possible to extract the ID of the record being inserted in a table at the time of inserting dat particular record into that table ??? Reference to Sql Server
Read about INSERT with OUTPUT. This is in my experience the easiest way of achieving an atomic INSERT outputting an inserted value.
Example, assuming that Table contains an auto-incremented field named ID:
DECLARE #outputResult TABLE (ID BIGINT)
INSERT INTO Table
(
Field1,
Field2
)
OUPUT INSERTED.ID INTO #outputResult
VALUES
(
....
)
SELECT TOP 1 ID FROM #outputResult
You can select the ID afterwards with
SELECT ##IDENTITY
or
SELECT SCOPE_IDENTITY()