I'm usung Oracle 10.
I've to concat the results from two sql queries in one row.
The first query is :
SELECT DISTINCT F.comments from flight F, task WHERE F.id = task.flight_id and task.name like 'BO%' AND F.comments IS NOT NULL
Which returns :
Initial comment.
And the second query (it concats the result one the query in one row) :
SELECT (RTRIM(XMLAGG(xmlelement(X, T.comments||',')order by F.id).extract('//text()'),',')) list from flight F, task T where F.id = T.flight_id and T.name like 'BOS%' AND T.comments IS NOT NULL
Which returns :
First comment.,Second comment.,Third comment.
I have to concat the results into one row so I did :
SELECT DISTINCT F.comments from flight F, task WHERE F.id = task.flight_id and task.name like 'BO%' AND F.comments IS NOT NULL
UNION ALL
SELECT (RTRIM(XMLAGG(xmlelement(X, T.comments||',')order by F.id).extract('//text()'),',')) list from flight F, task T where F.id = T.flight_id and T.name like 'BOS%' AND T.comments IS NOT NULL
Which returns me two rows. The first one about the result of the first query and the second one about the second query.
I would like to retrieve them in one row like :
Initial comment.First comment.,Second comment.,Third comment.
Thank you !
Push the two queries into a single subquery in the correct order then apply your xmlagg over top. Something like:
SELECT (RTRIM(XMLAGG(xmlelement(X, comments||',')order by sortorder, F.id).extract('//text()'),',')) list
from (
SELECT DISTINCT 1 sortorder,
f.id,
F.comments
from flight F, task
WHERE F.id = task.flight_id
and task.name like 'BO%'
AND F.comments IS NOT NULL
union all
SELECT 2, f.id, T.comments
from flight F, task T
where F.id = T.flight_id
and T.name like 'BOS%'
AND T.comments IS NOT NULL )
(pls forgive any minor syntax glitches - I'm away from my database at the moment)
Related
Let's say I have a table events with structure:
id
value_array
XXXX
[a,b,c,d]
...
...
I have a second table values_of_interest with structure:
value
x
y
z
a
I want to find id's that have any of the values found in values_of_interest. All else equal, what would be the most performant SQL to make this happen? (I am using BigQuery, but feel free to answer more generally)
My current thought is:
SELECT
DISTINCT e.id
FROM
events e, values_of_interest vi
WHERE
EXISTS(
SELECT
value
FROM
UNNEST(e.value_array) value
JOIN
vi ON vi.value = e.value
)
Few quick options for BigQuery Standard SQL
Option 1
select id
from `project.dataset.events`
where exists (
select 1
from `project.dataset.values_of_interest`
where value in unnest(value_array)
)
Option 2
select id
from `project.dataset.events` t
where (
select count(1)
from t.value_array as value
join `project.dataset.values_of_interest`
using(value)
) > 0
I would write this using exists and a join:
select e.id
from `project.dataset.events` e
where exists (select 1
from unnest(e.value_array) val join
`project.dataset.values_of_interest` voi
on val = voi.value
);
I have two tables which are totally independent from each other, and I need to extract information from both of them and generate a CSV.
I'm doing this query:
SELECT NOM_FLUX, TYPE_CONTENU, DATE_DEPOT_GED
FROM FLUX_GED
WHERE TYPE_CONTENU = 'TEMPO_COURRIER_FSS'
AND NOM_FLUX NOT LIKE 'PCC%'
With this result:
Then I'm doing a query from this result with the ID
Like This (on the first result)
SELECT ID, URL_RELATIVE, TYPE_CONTENU, NOM_ELEMENT
FROM ELEMENT_GED
WHERE ID IN (
SELECT ID_ELEMENT
FROM SUIVI_GED
WHERE ID_FLUX IN (18682403)
)
With this result:
And here is the information from the SUIVI_GED table:
First I would like to do like a PowerShell foreach loop on every ID of my first query and then export the result of both query in a common csv.
I would like a result like that for my csv:
NOM_FLUX;URL_RELATIVE;TYPE_CONTENU;NOM_ELEMENT
infoNomFlux;infoURL;infoType;infoNOM
You seem to want join. A rather literal translation of your queries would be:
select
f.nom_flux,
f.type_contenu as type_contenu_flux,
f.date_depot_ged ,
e.id,
e.url_relative,
e.type_contenu as type_contenu_element,
e.nom_element
from flux_ged f
inner join element_ged e
on exists (select 1 from suivi_ged s where s.id_flux = f.id and e.id = s.id)
where
f.type_contenu = 'TEMPO_COURRIER_FSS'
and f.nom_flux not like 'PCC%'
Depending on your actual design, you might be able to flatten the exists condition as another join:
select
f.nom_flux,
f.type_contenu as type_contenu_flux,
f.date_depot_ged ,
e.id,
e.url_relative,
e.type_contenu as type_contenu_element,
e.nom_element
from flux_ged f
inner join suivi_ged s on s.id_flux = f.id
inner join element_ged e on e.id = s.id
where
f.type_contenu = 'TEMPO_COURRIER_FSS'
and f.nom_flux not like 'PCC%'
I have a table called 'A' and another table called 'B'.
Here in table A i keep all the master details and where B it keeps the status of field A like approved, rejected.
My need is i need a single query with output as
{
submitted_count: 5,
{[details of first app], [details of 2 app], [], [],[]},
rejected_count : 2,
{[details of first app],[details of second app]}
}
How would i achieve this ?
If you want to convert the result of the query to JSON you need to use the json_agg function.
select json_agg(t)
from (
Select
count(1) as total,
string_agg(tb.detail,',') as details
FROM A tb
inner join B tbb
on tb.id = tbB.id_A
where tbb.status = true
union
Select
count(1) as total,
string_agg(tb.detail,',') as details
FROM A tb
inner join B tbb
on tb.id = tbB.id_A
where tbb.status = false
) t;
The output is a little bit different:
[{"total":2,"details":"Bob,Logan"},{"total":3,"details":"Scott,Jean,Gambit"}]
There is an example here how to use it
I currently want to combine two SQL queries into one. This is a bit similar to SQL: Taking the result of of query and using it another - combine. Suppose there are two queries:
SQL Statement
1.) SELECT *
FROM (SELECT B.example1
FROM EXAMPLE1A A
INNER JOIN EXAMPLE1B B ON A.ID = B.ID
WHERE A.ABC ='ABC'
ORDER BY A.ORDER_BY ) as colstate
2.) SELECT colstate
FROM EXAMPLE_TABLE
WHERE EFG LIKE '%'
AND BGTHAN >= '1'
AND SMTHAN <= '100'
ORDER BY ORDER_BY ASC
I want to use the result in query 1.) as the colstate (column statement) in query 2.). But:
What Have I tried is:
SELECT (SELECT B.example1
FROM EXAMPLE1A A
INNER JOIN EXAMPLE1B B
ON A.ID = B.ID
WHERE A.ABC ='ABC'
ORDER BY A.ORDER_BY )
FROM EXAMPLE_TABLE
WHERE EFG LIKE '%'
AND BGTHAN >= '1'
AND SMTHAN <= '100'
ORDER BY ORDER_BY ASC
And it turns out to be Error: Scalar subquery is only allowed to return a single row, how should I replace the "=" into "IN"? Or is my statement totally wrong?
"Combine two queries into one" - that's not a good specs. Try to find out what exactly you want to get as a FLAT 2-dimensional table, think of nested SELECTs as of nested loops where the inner one can only set a single value for parent's row. Like this:
[Outer loop - parent row]
[Inner loop - children rows]
// all you can do here is change a single parent's field to anything
// like constant/sum/avg/topmost/ugly-subquery-returning-a-single-result
[/Inner loop]
[/Outer loop]
The error says that query you are using as column statement must return at most a single row.
It should probably look something like this:
SELECT (SELECT B.example1
FROM EXAMPLE1A A
INNER JOIN EXAMPLE1B B
ON A.ID = B.ID
WHERE A.ABC ='ABC'
AND A.SOME_COLUMN = E.SOMECOLUMN // retrieve only relevant data for this row
ORDER BY A.ORDER_BY )
FROM EXAMPLE_TABLE E
WHERE EFG LIKE '%'
AND BGTHAN >= '1'
AND SMTHAN <= '100'
ORDER BY ORDER_BY ASC
I am new to PostgreSQL and I have a problem with the following query:
WITH relevant_einsatz AS (
SELECT einsatz.fahrzeug,einsatz.mannschaft
FROM einsatz
INNER JOIN bergefahrzeug ON einsatz.fahrzeug = bergefahrzeug.id
),
relevant_mannschaften AS (
SELECT DISTINCT relevant_einsatz.mannschaft
FROM relevant_einsatz
WHERE relevant_einsatz.fahrzeug IN (SELECT id FROM bergefahrzeug)
)
SELECT mannschaft.id,mannschaft.rufname,person.id,person.nachname
FROM mannschaft,person,relevant_mannschaften WHERE mannschaft.leiter = person.id AND relevant_mannschaften.mannschaft=mannschaft.id;
This query is working basically - but in "relevant_mannschaften" I am currently selecting each mannschaft, which has been to an relevant_einsatz with at least 1 bergefahrzeug.
Instead of this, I want to select into "relevant_mannschaften" each mannschaft, which has been to an relevant_einsatz WITH EACH from bergefahrzeug.
Does anybody know how to formulate this change?
The information you provide is rather rudimentary. But tuning into my mentalist skills, going out on a limb, I would guess this untangled version of the query does the job much faster:
SELECT m.id, m.rufname, p.id, p.nachname
FROM person p
JOIN mannschaft m ON m.leiter = p.id
JOIN (
SELECT e.mannschaft
FROM einsatz e
JOIN bergefahrzeug b ON b.id = e.fahrzeug -- may be redundant
GROUP BY e.mannschaft
HAVING count(DISTINCT e.fahrzeug)
= (SELECT count(*) FROM bergefahrzeug)
) e ON e.mannschaft = m.id
Explain:
In the subquery e I count how many DISTINCT mountain-vehicles (bergfahrzeug) have been used by a team (mannschaft) in all their deployments (einsatz): count(DISTINCT e.fahrzeug)
If that number matches the count in table bergfahrzeug: (SELECT count(*) FROM bergefahrzeug) - the team qualifies according to your description.
The rest of the query just fetches details from matching rows in mannschaft and person.
You don't need this line at all, if there are no other vehicles in play than bergfahrzeuge:
JOIN bergefahrzeug b ON b.id = e.fahrzeug
Basically, this is a special application of relational division. A lot more on the topic under this related question:
How to filter SQL results in a has-many-through relation
Do not know how to explain it, but here is an example how I solved this problem, just in case somebody has the some question one day.
WITH dfz AS (
SELECT DISTINCT fahrzeug,mannschaft FROM einsatz WHERE einsatz.fahrzeug IN (SELECT id FROM bergefahrzeug)
), abc AS (
SELECT DISTINCT mannschaft FROM dfz
), einsatzmannschaften AS (
SELECT abc.mannschaft FROM abc WHERE (SELECT sum(dfz.fahrzeug) FROM dfz WHERE dfz.mannschaft = abc.mannschaft) = (SELECT sum(bergefahrzeug.id) FROM bergefahrzeug)
)
SELECT mannschaft.id,mannschaft.rufname,person.id,person.nachname
FROM mannschaft,person,einsatzmannschaften WHERE mannschaft.leiter = person.id AND einsatzmannschaften.mannschaft=mannschaft.id;