column reference id is ambiguous postgres - postgresql

I'm writing a new query postgresql with alias but i still have the same problem of ambiguous column.
select a.id_application
from (SELECT * FROM t_mission as PM
LEFT JOIN t_mission_raf rm on PM.id_mission= rm.id_rm
LEFT JOIN t_mission_roles AS mr ON PM.id_mission = mr.id_mission
LEFT JOIN t_role AS r ON r.id_role = mr.id_role
LEFT JOIN t_appli AS app ON app.id_application = r.id_application
WHERE PM.type_mission = 1 AND PM.id_mission =24730) as a
Result:
Error msg : SQL Error [42702]: ERROR: column reference "id_application" is ambiguous
Position : 8

Don't SELECT * but exlipcitly select the columns you need. Make sure to only select app.id_application or r.id_application. Or use as for one of those.

Related

Getting duplicate column ERROR while trying to insert same column with two different datatypes using SELECT INTO clause in PostgreSql

I need to insert createdate column twice with two different datatypes one with the datatype defined in the table itself and another in char datatype.
I can insert it by changing the alias name of createdate column but can't insert with same alias name which i need.
so help me out to get correct way of doing it.
My query:
SELECT DISTINCT TE.id, T.debatchqueuelink, TE.transactionlink,
EC.errorclassification, TE.errorvalue,
EC.errorparameter, TE.classificationlink, TE.description,
TE.createdate AS createdate, TO_CHAR(TE.createdate, 'MM/dd/yyyy') AS createdate,
TE.status, TE.rebutt, TE.rebuttedstatus, BQ.appbatchnumber,
BQ.scanbatchnumber, BQ.clientlink, BQ.locationlink, T.patientid,
(DEUD.firstname|| ' ' ||DEUD.lastname) AS deusername, DEUD.email AS deuseremail,
(QCUD.firstname|| ' ' ||QCUD.lastname) AS qcusername, TE.inactive,
TE.decomment
INTO table373
FROM qctransactionerror TE
INNER JOIN errorclassification EC ON EC.id = TE.classificationlink
INNER JOIN qctransaction T ON T.id = TE.transactionlink
INNER JOIN batchqueue BQ ON T.debatchqueuelink = BQ.id
INNER JOIN batchqueue QCBQ ON T.qcbatchqueuelink = QCBQ.id
INNER JOIN userdetail QCUD ON QCBQ.assignedto = QCUD.id
INNER JOIN userdetail DEUD ON BQ.assignedto = DEUD.id
WHERE TE.inactive='t'
AND TE.status IN ('ERROR','QCCORRECTED')
LIMIT 0
The actual error message I am getting is:
Duplicate column:column "createdate" specified more than once

Postgres Error: missing FROM-clause entry for table

I have a query and am using left joins. I have the left join clause as follows:
left outer join ( select pup.brokerage_code, pcz.zip, count (pup.aggregate_id) as VerifiedAgentCount
from partner_user_profiles pup
join partner_user_roles pure on pure.user_profile_id = pup.id
join profile_coverage_zips pcz on pcz.profile_id = pup.id
where lower(pure.role) = 'agent'
and pup.verification_status like 'Verified%'
group by pup.brokerage_code, pcz.zip) vac on vac.brokerage_code = b.brokerage_code and pcz.zip = bcz.zip
However I am getting the error message saying that I am missing the FROM entry clause for "pcz" however I aliased the table in the join clause so I am not sure what is wrong.
You have defined the table alias pcz within the sub-select however the alias no longer exists when the outside the sub-select. At the point you have used it the appropriate alias is the one for the entire sub-select, in this case vac. So: vac.zip = = bcz.zip
left outer join ( select pup.brokerage_code, pcz.zip, count (pup.aggregate_id) as VerifiedAgentCount
from partner_user_profiles pup
join partner_user_roles pure on pure.user_profile_id = pup.id
join profile_coverage_zips pcz on pcz.profile_id = pup.id
where lower(pure.role) = 'agent'
and pup.verification_status like 'Verified%'
group by pup.brokerage_code, pcz.zip
) vac on vac.brokerage_code = b.brokerage_code
and vac.zip = bcz.zip

MySQL Workbench generate this error

Error Code: 1064. You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AS a LIMIT 0, 1000' at line 3
Query:
SELECT * FROM (
subject s INNER JOIN prerequisite p ON s.subject_code = p.subject_id)
AS a
I think what you want to do are derived tables
https://dev.mysql.com/doc/refman/5.6/en/derived-tables.html
SELECT * FROM (
select * from subject s INNER JOIN prerequisite p ON s.subject_code = p.subject_id)
AS a

PGSQL Error Code 42703 column does not exist

I have a database in postgreSQL. I want to read some data from there, but I get an error (column anganridref does not exist) when I execute my command.
Here is my NpgsqlCommand:
cmd.CommandText = "select * from angebot,angebotstatus,anrede where anrid=anganridref and anstaid=anganstaidref";
and my 3 tables
the names of my columns are rights. So I don't understand why that error comes. Someone can explain me why it does crash? Its not the problem of large and lowercase.
You are not prefixing your column names in the where clause:
select *
from angebot,
angebotstatus,
anrede
where anrid = anganridref <-- missing tablenames for the columns
and anstaid = anganstaidre
It's also recommended to use an explicit JOIN instead of the old SQL 89 implicit join syntax:
select *
from angebot
join angebotstatus on angebot.aaaa = angebotstatus.bbbb
join anrede on angebot.aaaa = anrede.bbbb

Postgres Complex Select in a View

I have this select clause that is working perfect:
SELECT
"Aspectos"."ID" AS "Aspecto Normativo ID",
"Aspectos"."Aspecto" AS "Aspecto Normativo",
"Fatores"."ID", "Fatores"."Fator" AS "Fator Normativo",
"Diagnostico"."Vinculo_Final",
"Fatores_1"."ID",
"Fatores_1"."Fator" AS "Fator Determinativo",
"Aspectos_1"."ID" AS "Aspecto Determinativo ID",
"Aspectos_1"."Aspecto" AS "Aspecto Determinativo",
Count("Itens"."ID") AS "No Itens",
Count("Itens"."ID") AS "Pri"
FROM "Diagnostico" INNER JOIN ("Aspectos" AS "Aspectos_1"
INNER JOIN (("Fontes" INNER JOIN "Itens" ON "Fontes"."ID" = "Itens"."Fonte")
INNER JOIN ("Fatores" AS "Fatores_1"
INNER JOIN ("Aspectos"
INNER JOIN ("Vinculos"
INNER JOIN "Fatores"
ON "Vinculos"."Fator_Normativo" = "Fatores"."ID")
ON ("Aspectos"."ID" = "Fatores"."Aspecto")
AND ("Aspectos"."ID" = "Fatores"."Aspecto"))
ON "Fatores_1"."ID" = "Vinculos"."Fator_Determinativo")
ON "Itens"."ID" = "Vinculos"."Item")
ON "Aspectos_1"."ID" = "Fatores_1"."Aspecto")
ON "Diagnostico"."ID" = "Vinculos"."Diagnostico_ID"
GROUP BY "Aspectos"."ID", "Aspectos"."Aspecto",
"Fatores"."ID", "Fatores"."Fator",
"Diagnostico"."Vinculo_Final",
"Fatores_1"."ID",
"Fatores_1"."Fator",
"Aspectos_1"."ID",
"Aspectos_1"."Aspecto"
ORDER BY "Aspectos"."ID", "Aspectos_1"."ID",
"Fatores"."Fator", "Fatores_1"."Fator";
But when I try to CREATE A VIEW with this same select I'm getting thuis error:
ERROR: column "ID" specified more than one time
Can anybody help me on this.
Thanks
You have "Fatores"."ID" (line 4) and "Fatores_1"."ID" (line 6). Give them different aliases.
For such complex queries it is recommended to have only 1 (one) column in per line in the statement for better visibility. Also it is recommended to always give aliases to the columns.