I need to insert a row into one table and use this row's id to insert two more rows into a different table within one transaction. I've tried this
begin;
insert into table default values returning table.id as C;
insert into table1(table1_id, column1) values (C, 1);
insert into table1(table1_id, column1) values (C, 2);
commit;
But it doesn't work. How can I fix it?
updated
You need a CTE, and you don't need a begin/commit to do it in one transaction:
WITH inserted AS (
INSERT INTO ... RETURNING id
)
INSERT INTO other_table (id)
SELECT id
FROM inserted;
Edit:
To insert two rows into a single table using that id, you could do that two ways:
two separate INSERT statements, one in the CTE and one in the "main" part
a single INSERT which joins on a list of values; a row will be inserted for each of those values.
With these tables as the setup:
CREATE TEMP TABLE t1 (id INTEGER);
CREATE TEMP TABLE t2 (id INTEGER, t TEXT);
Method 1:
WITH inserted1 AS (
INSERT INTO t1
SELECT 9
RETURNING id
), inserted2 AS (
INSERT INTO t2
SELECT id, 'some val'
FROM inserted1
RETURNING id
)
INSERT INTO t2
SELECT id, 'other val'
FROM inserted1
Method 2:
WITH inserted AS (
INSERT INTO t1
SELECT 4
RETURNING id
)
INSERT INTO t2
SELECT id, v
FROM inserted
CROSS JOIN (
VALUES
('val1'),
('val2')
) vals(v)
If you run either, then check t2, you'll see it will contain the expected values.
Please find the below query:
insert into table1(columnName)values('stack2');
insert into table_2 values(SCOPE_IDENTITY(),'val1','val2');
Related
I have a cross reference table of part numbers (PN). There are 2 columns, PN and ALT_PN. All part numbers cross reference each other.
I need to create a report showing only the unique values in this table. Example, only show that A has alternate of B, and not show that B is an alternate of A.
I found solutions for Mysql that work, but they don't work in Oracle 11g.
Create table temp ( id integer primary key, PN varchar(10), Alt_PN
varchar(10));
insert into temp values(1,'A','B');
insert into temp values(2,'B','A');
insert into temp values(3,'X','Y');
insert into temp values(4,'Y','X');
insert into temp values(5,'C','D');
insert into temp values(6,'C','E');
insert into temp values(7,'D','C');
insert into temp values(8,'D','E');
insert into temp values(9,'E','C');
insert into temp values(10,'E','D');
i only want to return IDs of 1, 3, 5, 6 and 8
If all cross reference each other, just do:
select t.*
from temp t
where t.pn < t.alt_pn;
This will return one row from each pair, and works on any type.
If you are concerned that not all pairs are present, you can do:
select t.*
from (select t.*,
row_number() over (partition by least(t.pn, t.alt_pn), least(t.pn, t.alt_pn) order by t.pn) as seqnum
from t
) t
where seqnum = 1;
I'm trying to insert a row into a table named table1 if only 'value' exists in table2. The newly created row returns an id and I want to use this id through a WITH query and insert it into a third table named table3.
Here is the sql statement I used.
WITH new_key AS (
INSERT INTO table1(name, value)
SELECT 'test', value
FROM table2
WHERE value = 'some_value'
RETURNING id
)
INSERT INTO table3(table1_id)
VALUES (new_key);
The INSERT query in the WITH query works and returns an id. Unfortunately the whole statement returns "new_key column does not exist".
You need to select the value from the CTE:
WITH new_key AS (
INSERT INTO table1(name, value)
SELECT 'test', value
FROM table2
WHERE value = 'some_value'
RETURNING id
)
INSERT INTO table3(table1_id)
SELECT id
FROM new_key;
for my intention I have to select a table to select columns from dependent on the column-value of an already given table.
First I thought about a CASE construct, if this is possible with sqlite.
SELECT * FROM
CASE IF myTable.column1 = "value1" THEN (SELECT * FROM table1 WHERE ...)
ELSE IF myTable.column1 = "value2" THEN (SELECT * FROM table2 WHERE ...)
END;
I am new to SQL. What construct would be the most concise (not ugly) solution and if I cannot have it in sqlite, what RDBM would be the best fit?
Thanks
Here is a proposal for associating a value from one of two tables for each entry in mytable. I.e. this is making the assumption that mytable does not only contain a single entry for choosing the secondary table.
For details on what this means, see "MCVE" at the end of this answer.
If you want to switch between two secondary tables, based on a single entry in main table, see at the very end of this answer.
Details:
a hardcoded "value1"/"value2" as column1 added on the fly to the result from secondary tables
joining by the faked colummn1 and a secondary join-key, assumption here id
a union all to make a single table from both secondary tables (including the fake column1)
select *
from mytable
left join
(select 'value1' as column1, * from table1
UNION ALL
select 'value2' as column1, * from table2)
using(id, column1);
Output (for the MCVE provided below, "a-f" from table1, "A-Z" from table2):
value1|1|a
value2|2|B
value1|3|c
value1|4|d
value2|5|E
value2|6|F
MCVE:
PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE mytable (column1 varchar(10), id int);
INSERT INTO mytable VALUES('value1',1);
INSERT INTO mytable VALUES('value2',2);
INSERT INTO mytable VALUES('value1',3);
INSERT INTO mytable VALUES('value1',4);
INSERT INTO mytable VALUES('value2',5);
INSERT INTO mytable VALUES('value2',6);
CREATE TABLE table2 (value varchar(2), id int);
INSERT INTO table2 VALUES('F',6);
INSERT INTO table2 VALUES('E',5);
INSERT INTO table2 VALUES('D',4);
INSERT INTO table2 VALUES('C',3);
INSERT INTO table2 VALUES('B',2);
INSERT INTO table2 VALUES('A',1);
CREATE TABLE table1 (value varchar(2), id int);
INSERT INTO table1 VALUES('a',1);
INSERT INTO table1 VALUES('b',2);
INSERT INTO table1 VALUES('c',3);
INSERT INTO table1 VALUES('d',4);
INSERT INTO table1 VALUES('e',5);
INSERT INTO table1 VALUES('f',6);
COMMIT;
For selecting between two tables based on a single entry in main table (in this case "mytable2":
select * from table1 where (select column1 from mytable2) = 'value1'
union all
select * from table2 where (select column1 from mytable2) = 'value2';
Output (with mytable2 only containing 'value1'):
a|1
b|2
c|3
d|4
e|5
f|6
I try to insert into table with 1 column is (select from table).
I should copy all the id to table1 with 1 column is (select from table )
This not working:
insert into table1 (id,resoucrce,rate) values ((select id from table2),0,0)
I want to do something like that insert all the id from table to another table with default values.
Use insert . . . select:
insert into table1 (id, resource, rate)
select id, 0, 0
from table2;
For copy the content of one table to another table within the same database use this :-
INSERT INTO TARGET_TABLE (`col1`,`col2`) SELECT `col1`,`col2` FROM SOURCE_TABLE;
or your query like that :-
Insert into table1 (id, resource, rate) select id, 0, 0 from table2;
You should focus "values" keyword;
values ((select id from table2),0,0)
When you use values(, , ,) you have to specify value columns. But you're trying to pass both resultset and single values together. That's why you get an error. You should only pass single values...
If its clear for you; you can easily find the correct sql syntax.
So I'm trying to insert a value into a secondary table, get the returned id from the insert, and use it together with some values in a prepared statement I'm writing.The return of the first statement(table2) is an id for a foreign key column in the first table.
I want to get the id of table 1 in the end.Something like :
WITH table2ID AS
(
INSERT INTO table2 (value) VALUES ('somevalue') RETURNING id;
)
INSERT INTO table1(table2returnvalue,othervalue) VALUES
(table2ID 'val2') RETURNING id
I can see that I will probably need a transaction as well, because I don't want an isolated in table2 if table1's statement fails for some reason.
Could you please help?
To do this with a CTE its usually easiest to return the entire row (output from table2) and reference that in your second insert query.
WITH table2 AS
(
INSERT INTO table2 ( value )
VALUES ( 'somevalue' )
RETURNING table2.*;
)
INSERT INTO table1 ( table2returnvalue, othervalue )
SELECT table2.id, 'val2'
FROM table2
RETURNING table1.id
I think you're looking for something like this:
WITH table2ID AS
(
INSERT INTO table2 (value) VALUES ('somevalue') RETURNING id;
)
INSERT INTO table1(table2returnvalue,othervalue)
SELECT table2ID.id, 'val2' FROM table2ID;