Anybody know why this isn't working? I'm getting: ERROR: syntax error at or near "most_recent"
with most_recent as (SELECT MAX(public."Master_playlist".updated_at)
FROM public."Master_playlist")
SELECT * from public."Playlist"
JOIN public."Master_playlist_playlist" on public."Playlist".id = public."Master_playlist_playlist".playlist_id
JOIN public."Master_playlist" on public."Master_playlist_playlist".master_playlist_id = public."Master_playlist".id
WHERE public."Master_playlist".updated_at = most_recent;
Supposed to be getting the most recent date from Master_playlist and then using that to select a Master_playlist to join the inner query with
Thanks! HM
The with clause creates a derived table, which you need select from, using a join or a subquery. You also need to alias the column so you can refer to it afterwards, as in:
with most_recent as (
SELECT MAX(updated_at) max_updated_at
FROM public."Master_playlist"
)
SELECT *
from public."Playlist"
JOIN public."Master_playlist_playlist"
on public."Playlist".id = public."Master_playlist_playlist".playlist_id
JOIN public."Master_playlist"
on public."Master_playlist_playlist".master_playlist_id = public."Master_playlist".id
WHERE public."Master_playlist".updated_at = (SELECT max_updated_at FROM most_recent)
But here, it looks like it is simpler to use a row-limiting query:
select ...
from (
select *
from public."Master_playlist"
order by updated_at desc
limit 1
) mp
inner join public."Master_playlist_playlist" mpp
on mpp.master_playlist_id = mp.id
inner join public."Playlist" p
on p.id = mpp.playlist_id
Related
EDIT:
The result supposed to be like this:
desired result
I have this query:
SELECT DISTINCT mitarbeiter.mitarbnr, mitarbeiter.login, mitarbeiter.name1, mitarbeiter.name2
FROM vertragspos
left join vertrag_ek_vk_zuord ON vertragspos.id = vertrag_ek_vk_zuord.ek_vertragspos_id
left join mitarbeiter ON vertrag_ek_vk_zuord.anlage_mitarbnr = mitarbeiter.mitarbnr
left join vertragskopf ON vertragskopf.id = vertragspos.vertrag_id
left join
(
SELECT wkurse.*, fremdwaehrung.wsymbol
FROM wkurse
INNER join
(
SELECT lfdnr, Max(tag) AS maxTag
FROM wkurse
WHERE tag < SYSDATE
GROUP BY lfdnr
) t1
ON wkurse.lfdnr = t1.lfdnr AND wkurse.Tag = t1.maxTag
INNER JOIN fremdwaehrung ON wkurse.lfdnr = fremdwaehrung.lfdnr
) wkurse ON vertragskopf.blfdwaehrung = wkurse.lfdnr
left join
(
SELECT vertrag_ID, Sum (preis) preis, Sum (menge) menge, Sum (preis * menge / Decode (vertragskopf.zahlintervall, 1,1,2,2,3,3,4,6,5,12,1) / wkurse.kurs) vertragswert
FROM vertragspos
GROUP BY vertrag_ID
) s ON vertragskopf.id = s.vertrag_id
But I always get an error on line 21 Pos 145:
ORA-00904 WKURSE.KURS invalid identifier
The WKURSE table is supposed be joined already above, but why do I still get error?
How can I do join with all these tables?
I need to join all these tables:
Mitarbeiter, Vertragspos, vertrag_ek_vk_zuord, wkurse, fremdwaehrung, vertragskopf.
What is the right syntax? I'm using SQL Tool 1,8 b38
Thank you.
Because LEFT JOIN is executed on entire dataset, and not in row-by-row manner. So there's no wkurse.kurs available in the execution context of subquery. Since you join that tables, you can place the calculation in the top-most select statement.
EDIT:
After you edited the statement, it became clear where does vertragskopf.zahlintervall came from. But I don't know where are you going to use calculated vertragswert (now it is absent in the query), so I've put it in the result. As I'm not a SQL parser and have no idea of your tables, so I cannot check the code, but calculation now can be resolved (all the values are available in calculation context).
SELECT DISTINCT mitarbeiter.mitarbnr, mitarbeiter.login, mitarbeiter.name1, mitarbeiter.name2, s.amount / Decode (vertragskopf.zahlintervall, 1,1,2,2,3,3,4,6,5,12,1) / wkurse.kurs) vertragswert
FROM vertragspos
left join vertrag_ek_vk_zuord ON vertragspos.id = vertrag_ek_vk_zuord.ek_vertragspos_id
left join mitarbeiter ON vertrag_ek_vk_zuord.anlage_mitarbnr = mitarbeiter.mitarbnr
left join vertragskopf ON vertragskopf.id = vertragspos.vertrag_id
left join (
SELECT wkurse.*, fremdwaehrung.wsymbol
FROM wkurse
INNER join (
SELECT lfdnr, Max(tag) AS maxTag
FROM wkurse
WHERE tag < SYSDATE
GROUP BY lfdnr
) t1
ON wkurse.lfdnr = t1.lfdnr AND wkurse.Tag = t1.maxTag
INNER JOIN fremdwaehrung ON wkurse.lfdnr = fremdwaehrung.lfdnr
) wkurse ON vertragskopf.blfdwaehrung = wkurse.lfdnr
left join (
SELECT vertrag_ID, Sum (preis) preis, Sum (menge) menge, Sum (preis * menge) as amount
FROM vertragspos
GROUP BY vertrag_ID
) s ON vertragskopf.id = s.vertrag_id
Rewriting the code using WITH clause makes it much clearer than select from select.
Also get the rate on last day before today in oracle is as simple as
select wkurse.lfdnr
, max(wkurse.kurs) keep (dense_rank first order by wkurse.tag desc) as rate
from wkurse
where tag < sysdate
group by wkurse.lfdnr
One option is a lateral join:
left join lateral
(SELECT vertrag_ID, Sum(preis) as preis, Sum(menge) as menge,
Sum (preis * menge / Decode (vertragskopf.zahlintervall, 1,1,2,2,3,3,4,6,5,12,1) / wkurse.kurs) vertragswert
FROM vertragspos
GROUP BY vertrag_ID
) s
ON vertragskopf.id = s.vertrag_id
I want to make an INNER JOIN between a table variable and a view
SELECT
T. *
FROM
#mytable AS T, Vw_GetPackageStat.DimensionValueName
From
dbo.Vw_GetPackageStat
INNER JOIN
T ON (dbo.Vw_GetPackageStat.AttributeValueID = T.AttributeValueID)
I have this error
Incorrect syntax near the keyword 'from'.
SELECT T.* ,
Vw_GetPackageStat.DimensionValueName
FROM #AllPackage AS T
INNER JOIN dbo.Vw_GetPackageStat ON ( dbo.Vw_GetPackageStat.AttributeValueID = T.AttributeValueID )
Use this
SELECT T.* ,
Vw_GetPackageStat.DimensionValueName
FROM #AllPackage AS T
INNER JOIN dbo.Vw_GetPackageStat ON
Vw_GetPackageStat.AttributeValueID = T.AttributeValueID
I think you were originally trying to do this
SELECT T.*
,Vw_GetPackageStat.DimensionValueName
FROM #mytable AS T
,Vw_GetPackageStat
WHERE dbo.Vw_GetPackageStat.AttributeValueID = T.AttributeValueID
this is a valid syntax but I would avoid it at all cost. Instead use traditional explicit INNER JOIN
SELECT T.*
,v.DimensionValueName
FROM #mytable AS T
INNER JOIN Vw_GetPackageStat AS v
ON T.AttributeValueID = V.AttributeValueID
I was trying to join 3 tables - CurrentProducts, SalesInvoice and SalesInvoiceDetail. SalesInvoiceDetail contains FK/foreign key to the other two tables and some other columns. The first query is ok but the second is not. My question comes at the end of the code.
Right
select *
from CurrentProducts inner join
(dbo.SalesInvoiceDetail inner join dbo.SalesInvoice
on dbo.SalesInvoiceDetail.InvoiceID = dbo.SalesInvoice.InvoiceID
)
on dbo.SalesInvoiceDetail.ProductID = dbo.CurrentProducts.ProductID
Wrong
select *
from CurrentProducts inner join
(select * from
dbo.SalesInvoiceDetail inner join dbo.SalesInvoice
on dbo.SalesInvoiceDetail.InvoiceID = dbo.SalesInvoice.InvoiceID
)
on dbo.SalesInvoiceDetail.ProductID = dbo.CurrentProducts.ProductID
error - Incorrect syntax near the keyword 'on'.
Why is the second query wrong ? Isn't it conceptually the same as the first one ? That is inside join makes a result set. We select * the result set and then join this result set to CurrentProducts ?
The first query is a "plain" join expressed with an older syntax. It can be rewritten as:
select
*
from
CurrentProducts
inner join dbo.SalesInvoiceDetail
on dbo.SalesInvoiceDetail.ProductID = dbo.CurrentProducts.ProductID
inner join dbo.SalesInvoice
on dbo.SalesInvoiceDetail.InvoiceID = dbo.SalesInvoice.InvoiceID
The second query is a join where the second table is a subquery. When you join on a subquery, you must assign an alias to it and use that alias to refer to the columns returned by the subquery:
select
*
from
CurrentProducts
inner join (select *
from dbo.SalesInvoiceDetail
inner join dbo.SalesInvoice
on SalesInvoiceDetail.InvoiceID = SalesInvoice.InvoiceID
) as foo on foo.ProductID = dbo.CurrentProducts.ProductID
You need to alias the inner query. Also, in the first one the parentheses are not needed.
select *
from CurrentProducts inner join
(select * from
dbo.SalesInvoiceDetail inner join dbo.SalesInvoice
on dbo.SalesInvoiceDetail.InvoiceID = dbo.SalesInvoice.InvoiceID
) A
on A.ProductID = dbo.CurrentProducts.ProductID
As written in the title: How to write this SQL statement correctly?
select
sl.switch_ip,
sl.switch_name,
count(m.switch_ip) as macentries,
(select arpentries from (select sl1.switch_ip, sl1.switch_name, count(ar.switch_ip) as arpentries
from my_switchlist sl1
left Join my_arptable ar on ar.switch_ip = sl1.switch_ip
group by sl1.switch_ip,sl1.switch_name
order by sl1.switch_ip))
from my_switchlist sl
left Join my_mactable m on m.switch_ip = sl.switch_ip
group by sl.switch_ip,sl.switch_name
order by sl.switch_ip
The select and the sub-select work fine if they are executed separately.
But as soon as I put them together I get the following error:
Error: A subquery has returned not exactly one row.
SQLState: 21000
ErrorCode: -284
Position: 470
Looks like you want both the 'count' aggregates, which should be possible with something like this:
select
macquery.switch_ip,
macquery.switch_name,
macquery.macentries,
arpquery.arpentries
from
(
select
sl.switch_ip as switch_ip,
sl.switch_name as switch_name,
count(m.switch_ip) as macentries
from my_switchlist sl
left outer join my_mactable m
on m.switch_ip = sl.switch_ip
group by
sl.switch_ip,
sl.switch_name
) macquery
join
(
select
sl1.switch_ip as switch_ip,
sl1.switch_name as switch_name,
count(ar.switch_ip) as arpentries
from my_switchlist sl1
left outer join my_arptable ar
on ar.switch_ip = sl1.switch_ip
group by
sl1.switch_ip,
sl1.switch_name
) arpquery
on (macquery.switch_ip = arpquery.switch_ip
and macquery.switch_name = arpquery.switch_name)
Probably there are more than one "sl1.switch_ip,sl1.switch_name" groups in your "my_switchlist, my_arptable" join.
select arpentries from (select sl1.switch_ip, sl1.switch_name, count(ar.switch_ip) as arpentries
from my_switchlist sl1
left Join my_arptable ar on ar.switch_ip = sl1.switch_ip
group by sl1.switch_ip,sl1.switch_name
order by sl1.switch_ip)
The above query should not return more than one result in order you to use its result in your outer query. So probably there is more than one "sl1.switch_ip,sl1.switch_name" group.
I'm trying to combine the results produced by two queries on my database...
q1:
SELECT * FROM werkgevers JOIN werkgevers_branches ON werkgevers.werkgever_id = werkgevers_branches.werkgever_id JOIN plaatsen ON werkgevers.plaats_id = plaatsen.plaats_id JOIN branches ON werkgevers_branches.branche_id = branches.branche_id GROUP BY werkgevers_branches.werkgever_id
q2:
SELECT werkgever_id, COUNT(werkgever_id) AS aantalvacatures FROM vacatures GROUP BY werkgever_id
... like this:
SELECT * FROM (
SELECT * FROM werkgevers JOIN werkgevers_branches ON werkgevers.werkgever_id = werkgevers_branches.werkgever_id JOIN plaatsen ON werkgevers.plaats_id = plaatsen.plaats_id JOIN branches ON werkgevers_branches.branche_id = branches.branche_id GROUP BY werkgevers_branches.werkgever_id
) AS tbl1
LEFT OUTER JOIN
(
SELECT * FROM (
SELECT werkgever_id, COUNT(werkgever_id) AS aantalvacatures FROM vacatures GROUP BY werkgever_id
) AS tbl2
)
USING (werkgever_id)
but I keep getting the error
#1248 - Every derived table must have its own alias
I'm not sure where I should name any derived tables, any suggestions?
Your LEFT OUTER JOIN derived table needs an alias. Try this:
select *
from (
select *
from werkgevers
join werkgevers_branches on werkgevers.werkgever_id = werkgevers_branches.werkgever_id
join plaatsen on werkgevers.plaats_id = plaatsen.plaats_id
join branches on werkgevers_branches.branche_id = branches.branche_id
group by werkgevers_branches.werkgever_id
) as tbl1
left outer join (
select *
from (
select werkgever_id,
COUNT(werkgever_id) as aantalvacatures
from vacatures
group by werkgever_id
) as tbl2
) a USING (werkgever_id)
Note the alias a on the last line.