I have tables:
ContainerSubTypes (Id, Name) with many records,
WorkAreas (Id, Name) with only one row,
WorkAreaContainerSubTypes table (Id, WorkAreaId, ContainerSubTypeId) - empty table.
I need to insert data into WorkAreaContainerSubTypes table, it should look like:
(1, 1, containersubtype1_id)
(2, 1, containersubtype2_id)
(3, 1, containersubtype3_id)
And I'm trying sql like:
INSERT INTO WorkAreaContainerSubTypes (WorkAreaId, ContainerSubTypeId)
VALUES
(1, (SELECT Id FROM ContainerSubTypes));
But SELECT query has more than 1 row and it throws error.
How can I implement that inserting?
VALUES table value constructor specifies a set of row value expressions to be constructed into a table, so you need a different statement:
INSERT INTO WorkAreaContainerSubTypes (WorkAreaId, ContainerSubTypeId)
SELECT 1, Id
FROM ContainerSubTypes;
As an additional note, you may use VALUES only if SELECT Id FROM ContainerSubTypes statement returns a single row or no rows (perhaps with an optional WHERE clause):
INSERT INTO WorkAreaContainerSubTypes (WorkAreaId, ContainerSubTypeId)
VALUES
(1, (SELECT Id FROM ContainerSubTypes WHERE Name = 'Some name'));
Just use insert . . . select:
INSERT INTO WorkAreaContainerSubTypes (WorkAreaId, ContainerSubTypeId)
SELECT 1, Id
FROM ContainerSubTypes;
Related
Say I have two tables role and roleApp defined like this:
create table #tempRole(roleId int);
insert into #tempRole (roleId) values (1)
insert into #tempRole (roleId) values (2)
create table #tempRoleApp(roleId int, appId int);
insert into #tempRoleApp (roleId, appId) values (1, 26)
insert into #tempRoleApp (roleId, appId) values (2, 26)
insert into #tempRoleApp (roleId, appId) values (1, 27)
So, from #tempRoleApp table, I want to get only the rows that matches all the values of the #tempRole table (1 and 2), so in this case the output needs to be 26 (as it matches both 1 and 2) but not 27 as the table does not have 2, 27).
#tempRole table is actually the output from another query so it can have arbitrary number of values.
I tried few things like:
select *
from #tempRoleApp
where roleId = ALL(select roleId FROM #tempRole)
Which does not give anything... tried few more things but not getting what I want.
I believe this gives what you were looking for.
select tra.appId
from #tempRoleApp as tra
join #tempRole as tr on tra.roleId = tr.roleId
group by tra.appId
having count(distinct tra.roleId) = (select count(distinct roleId) from #tempRole)
It uses count distinct to get the total unique roleId's in the tempRole table and compares that with the unique count of these per appId, after confirming the roleIds match between the tables.
As you clarified in the comment, once you add another tempRole roleId, now no entry has all of the Ids so no rows are returned.
I have two tables one is objects with the attribute of id and is_green.The other table is object_closure with the attributes of ancestor_id, descendant_od, and created_at. ie.
Objects: id, is_green
Object_closure: ancestor_id, descendant_od, created_at
There are more attributes in the Object table but not necessary to mention in this question.
I have a query like this:
-- create a table
CREATE TABLE objects (
id INTEGER PRIMARY KEY,
is_green boolean
);
CREATE TABLE object_Closure (
ancestor_id INTEGER ,
descendant_id INTEGER,
created_at date
);
-- insert some values
INSERT INTO objects VALUES (1, 1 );
INSERT INTO objects VALUES (2, 1 );
INSERT INTO objects VALUES (3, 1 );
INSERT INTO objects VALUES (4, 0 );
INSERT INTO objects VALUES (5, 1 );
INSERT INTO objects VALUES (6, 1 );
INSERT INTO object_Closure VALUES (1, 2, 12-12-2020 );
INSERT INTO object_Closure VALUES (1, 3, 12-13-2020 );
INSERT INTO object_Closure VALUES (2, 3, 12-14-2020 );
INSERT INTO object_Closure VALUES (4, 5, 12-15-2020 );
INSERT INTO object_Closure VALUES (4, 6, 12-16-2020 );
INSERT INTO object_Closure VALUES (5, 6, 12-17-2020 );
-- fetch some values
SELECT
O.id,
P.id,
group_concat(DISTINCT P.id ) as p_ids
FROM objects O
LEFT JOIN object_Closure OC on O.id=OC.descendant_id
LEFT JOIN objects P on OC.ancestor_id=P.id AND P.is_green=1
GROUP BY O.id
The result is
query result
I would like to see P.id for O.id=6 is also 5 instead of null. Afterall,5 is still a parentID (p.id). More importantly, I also want the id shown in P.id as the first created id if there are more than one. (see P.created_at).
I understand the reason why it happens is that the first one the system pick is null, and the null was created by the join with the condition of is_green; however, I need to filter out those objects that are green only in the p.id.
I cannot do an inner join (because I need the other attributes of the table and sometimes both P.id and p_ids are null, but still need to show in the result) I cannot restructure the database. It is already there and cannot be changed. I also cannot just use a Min() or Max() aggregation because I want the ID that is picked is the first created one.
So is there a way to skip the null in the join?
or is there a way to filter the selection in the select clause?
or do an order by before the grouping?
P.S. My original code concat the P.id by the order of P.created_at. For some reason, I cannot replicate it in the online SQL simulator.
I have an interesting query I'm trying to figure out. I have a view which is getting a column added to it. This column is pivoted data coming from other tables, to form into a single row. Now, I need to wipe out duplicate entries in this pivoted data. Listagg is great for getting the data to a single row, but I need to make it unique. While I know how to make it unique, I'm tripping up on the fact that correlated sub-queries only go 1 level deep. So... not really sure how to get a distinct list of values. I can get it to work if I don't do the distinct just fine. Anyone out there able to work some SQL magic?
Sample data:
drop table test;
drop table test_widget;
create table test (id number, description Varchar2(20));
create table test_widget (widget_id number, test_fk number, widget_type varchar2(20));
insert into test values(1, 'cog');
insert into test values(2, 'wheel');
insert into test values(3, 'spring');
insert into test_widget values(1, 1, 'A');
insert into test_widget values(2, 1, 'A');
insert into test_widget values(3, 1, 'B');
insert into test_widget values(4, 1, 'A');
insert into test_widget values(5, 2, 'C');
insert into test_widget values(6, 2, 'C');
insert into test_widget values(7, 2, 'B');
insert into test_widget values(8, 3, 'A');
insert into test_widget values(9, 3, 'C');
insert into test_widget values(10, 3, 'B');
insert into test_widget values(11, 3, 'B');
insert into test_widget values(12, 3, 'A');
commit;
Here is an example of the query that works, but shows duplicate data:
SELECT A.ID
, A.DESCRIPTION
, (SELECT LISTAGG (WIDGET_TYPE, ', ') WITHIN GROUP (ORDER BY WIDGET_TYPE)
FROM TEST_WIDGET
WHERE TEST_FK = A.ID) widget_types
FROM TEST A
Here is an example of what does NOT work due to the depth of where I try to reference the ID:
SELECT A.ID
, A.DESCRIPTION
, (SELECT LISTAGG (WIDGET_TYPE, ', ') WITHIN GROUP (ORDER BY WIDGET_TYPE)
FROM (SELECT DISTINCT WIDGET_TYPE
FROM TEST_WIDGET
WHERE TEST_FK = A.ID))
WIDGET_TYPES
FROM TEST A
Here is what I want displayed:
1 cog A, B
2 wheel B, C
3 spring A, B, C
If anyone knows off the top of their head, that would fantastic! Otherwise, I can post up some sample create statements to help you with dummy data to figure out the query.
You can apply the distinct in a subquery, which also has the join - avoiding the level issue:
SELECT ID
, DESCRIPTION
, LISTAGG (WIDGET_TYPE, ', ')
WITHIN GROUP (ORDER BY WIDGET_TYPE) AS widget_types
FROM (
SELECT DISTINCT A.ID, A.DESCRIPTION, B.WIDGET_TYPE
FROM TEST A
JOIN TEST_WIDGET B
ON B.TEST_FK = A.ID
)
GROUP BY ID, DESCRIPTION
ORDER BY ID;
ID DESCRIPTION WIDGET_TYPES
---------- -------------------- --------------------
1 cog A, B
2 wheel B, C
3 spring A, B, C
I was in a unique situation using the Pentaho reports writer and some inconsistent data. The Pentaho writer uses Oracle to query data, but has limitations. The data pieces were unique but not classified in a consistent manner, so I created a nested listagg inside of a left join to present the data the way I wanted to:
left join
(
select staff_id, listagg(thisThing, ' --- '||chr(10) ) within group (order by this) as SCHED_1 from
(
SELECT
staff_id, RPT_STAFF_SHIFTS.ORGANIZATION||': '||listagg(
RPT_STAFF_SHIFTS.DAYS_OF_WEEK
, ',' ) within group (order by BEGIN_DATE desc)
as thisThing
FROM "RPT_STAFF_SHIFTS" where "RPT_STAFF_SHIFTS"."END_DATE" is null
group by staff_id, organization)
group by staff_id
) schedule_1 on schedule_1.staff_id = "RPT_STAFF"."STAFF_ID"
where "RPT_STAFF"."STAFF_ID" ='555555'
This is a different approach than using the nested query, but it some situations it might work better by taking into account the level issue when developing the query and taking an extra step to fully concatenate the results.
I have to insert data into first and second table directly. But the third table which I received data as array and inserted into 3rd table as same.
In my 3rd table values will be repeated. Ex:
values:
{name=ff,age=45,empid=23,desig=se,offid=1,details=kk,offid=2,details=aa,offid=3,details=bb,offid=4,details=cc}
So using 2nd table userid as same for all the offid, but details and other columns are different
#My issue is i will get single hit but i need to iterate for 3rd table.
with first_insert as (
insert into sample(name,age)
values(?,?)
RETURNING id
),
second_insert as (
insert into sample1(empid,desig)
values((select id from first_insert),?)
RETURNING userid
)
insert into sample2(offid,details)
values((select userid from second_insert),?)
Is this available or possible in PostgreSQL?
Yes, absolutely possible.
You can join rows from CTEs to VALUES expressions to combine them for a new INSERT in a data-modifying CTE. Something like this:
WITH first_insert AS (
INSERT INTO sample(name,age)
VALUES (?,?)
RETURNING id
)
, second_insert AS (
INSERT INTO sample1(empid, desig, colx)
SELECT i1.id, v.desig, v.colx
FROM first_insert i1
, (VALUES(?,?)) AS v(desig, colx)
RETURNING userid
)
INSERT INTO sample2(offid, details, col2, ...)
SELECT i2.userid, v.details, ...
FROM second_insert i2
, (VALUES (?,?, ...)) AS v(details, col2, ...);
Is a query like this possible? MySQL gives me an Syntax error. Multiple insert-values with nested selects...
INSERT INTO pv_indices_fields (index_id, veld_id)
VALUES
('1', SELECT id FROM pv_fields WHERE col1='76' AND col2='val1'),
('1', SELECT id FROM pv_fields WHERE col1='76' AND col2='val2')
I've just tested the following (which works):
insert into test (id1, id2) values (1, (select max(id) from test2)), (2, (select max(id) from test2));
I imagine the problem is that you haven't got ()s around your selects as this query would not work without it.
When you have a subquery like that, it has to return one column and one row only. If your subqueries do return one row only, then you need parenthesis around them, as #Thor84no noticed.
If they return (or could return) more than row, try this instead:
INSERT INTO pv_indices_fields (index_id, veld_id)
SELECT '1', id
FROM pv_fields
WHERE col1='76'
AND col2 IN ('val1', 'val2')
or if your conditions are very different:
INSERT INTO pv_indices_fields (index_id, veld_id)
( SELECT '1', id FROM pv_fields WHERE col1='76' AND col2='val1' )
UNION ALL
( SELECT '1', id FROM pv_fields WHERE col1='76' AND col2='val2' )