Instead of 'table variable+column name =' is there any method to simplify that? - sql

Instead of table variable+column name = is there any method to simplify that?
update [hopi].[dbo].[hdc
set dostat = 'i'
from [hopi].[dbo].[hdc] as b
inner join [hopi].[dbo].hperson as a
on b.hpercode = a.hpercode
inner join [hopi].[dbo].[hprocm] as c
on b.proccode = c.proccode
where b.dostat = 'a'
and datepart(yy,b.dodate)='" & yr & "'
and datepart(mm,b.dodate)='" & mnth & "'
and datepart(dd,b.dodate)='" & dy & "'
and a.last= '" & & "'enter code here
and a.first= '" & & "'
and (c.procdesc='prec' or c.procdesc='pros' or c.procdesc='vat' or c.procdesc='vet' or c.procdesc='pak' or c.procdesc='pren' or c.procdesc='maser' or c.procdesc='lolo' or c.procdesc='yawa')


You can use an IN clause here to avoid the repetition i.e.
AND (c.procdesc IN ('prec', 'pros', 'vat', 'vet', 'pak', 'pren', 'maser', 'lolo', 'yawa'))

Related

Update query, nested iif SET and joined tables

Trying to make an Update Query with inner join and have the SET reflect the current month number.
Need help with syntax on updating a joined table that has columns for months, need to update the months that are Month(DATE()) +1,+2 only. Trying to use the below nested IIF as "IIF(Month(Date()) ="1",( SET table.c = table2.c2......) complete code below.
Syntax error is the result
Sample data
to update sql table
linked excel with values to use for updates
Update dbo_MasterSalesForecast_Test
INNER JOIN MasterSalesForecastUpdate
ON (dbo_MasterSalesForecast_Test.SubTo=MasterSalesForecastUpdate.Item) AND( dbo_MasterSalesForecast_Test.Planner=MasterSalesForecastUpdate.Planner)
IIF(Month(Date()) ="1",( SET
dbo_MasterSalesForecast_Test.[YY:1] = [MasterSalesForecastUpdate].[YYJan],
dbo_MasterSalesForecast_Test.[YY:2] = [MasterSalesForecastUpdate].[YYFan],
dbo_MasterSalesForecast_Test.[YY:3] = [MasterSalesForecastUpdate].[YYMar])
,
IIF(Month(Date())="2",( SET
dbo_MasterSalesForecast_Test.[YY:2]=[MasterSalesForecastUpdate].[YYFeb],
dbo_MasterSalesForecast_Test.[YY:3]=[MasterSalesForecastUpdate].[YYMar],
dbo_MasterSalesForecast_Test.[YY:4]=[MasterSalesForecastUpdate].[YYApr])
,
IIF(Month(Date())="3",( SET
dbo_MasterSalesForecast_Test.[YY:3]=[MasterSalesForecastUpdate].[YYMar],
dbo_MasterSalesForecast_Test.[YY:4]=[MasterSalesForecastUpdate].[YYApr],
dbo_MasterSalesForecast_Test.[YY:5]=[MasterSalesForecastUpdate].[YYMay])
,
IIF(Month(Date())="4",(SET
dbo_MasterSalesForecast_Test.[YY:4]=[MasterSalesForecastUpdate].[YYApr],
dbo_MasterSalesForecast_Test.[YY:5]=[MasterSalesForecastUpdate].[YYMay],
dbo_MasterSalesForecast_Test.[YY:6]=[MasterSalesForecastUpdate].[YYJun])
,
IIF(Month(Date())="5",(SET
dbo_MasterSalesForecast_Test.[YY:5]=[MasterSalesForecastUpdate].[YYMay],
dbo_MasterSalesForecast_Test.[YY:6]=[MasterSalesForecastUpdate].[YYJun],
dbo_MasterSalesForecast_Test.[YY:7]=[MasterSalesForecastUpdate].[YYJul])
,
IIF(Month(Date())="6",(SET
dbo_MasterSalesForecast_Test.[YY:6]=[MasterSalesForecastUpdate].[YYJun],
dbo_MasterSalesForecast_Test.[YY:7]=[MasterSalesForecastUpdate].[YYJul],
dbo_MasterSalesForecast_Test.[YY:8]=[MasterSalesForecastUpdate].[YYAug])
,
IIF(Month(Date())="7",(SET
dbo_MasterSalesForecast_Test.[YY:7]=[MasterSalesForecastUpdate].[YYJul],
dbo_MasterSalesForecast_Test.[YY:8]=[MasterSalesForecastUpdate].[YYAug],
dbo_MasterSalesForecast_Test.[YY:9]=[MasterSalesForecastUpdate].[YYSep])
,
IIF(Month(Date())="8",(SET
dbo_MasterSalesForecast_Test.[YY:8]=[MasterSalesForecastUpdate].[YYAug],
dbo_MasterSalesForecast_Test.[YY:9]=[MasterSalesForecastUpdate].[YYSep],
dbo_MasterSalesForecast_Test.[YY:10]=[MasterSalesForecastUpdate].[YYOct])
,
IIF(Month(Date())="9",(SET
dbo_MasterSalesForecast_Test.[YY:9]=[MasterSalesForecastUpdate].[YYSep],
dbo_MasterSalesForecast_Test.[YY:10]=[MasterSalesForecastUpdate].[YYOct],
dbo_MasterSalesForecast_Test.[YY:11]=[MasterSalesForecastUpdate].[YYNov])
,
IIF(Month(Date())="10",(SET
dbo_MasterSalesForecast_Test.[YY:10]=[MasterSalesForecastUpdate].[YYOct],
dbo_MasterSalesForecast_Test.[YY:11]=[MasterSalesForecastUpdate].[YYNov],
dbo_MasterSalesForecast_Test.[YY:12]=[MasterSalesForecastUpdate].[YYDec])
,
IIF(Month(Date())="11",(SET
dbo_MasterSalesForecast_Test.[YY:11]=[MasterSalesForecastUpdate].[YYNov],
dbo_MasterSalesForecast_Test.[YY:12]=[MasterSalesForecastUpdate].[YYDec],
dbo_MasterSalesForecast_Test.[YY+1:1]=[MasterSalesForecastUpdate].[YY+1Jan])
,
IIF(Month(Date())="12"(SET
dbo_MasterSalesForecast_Test.[YY:12]=[MasterSalesForecastUpdate].[YYDec],
dbo_MasterSalesForecast_Test.[YY+1:1]=[MasterSalesForecastUpdate].[YY+1Jan],
dbo_MasterSalesForecast_Test.[YY+1:02]=[MasterSalesForecastUpdate].[YY+1Feb])
)))))))))));

Cannot conditionally reference fields. Field must be static in query object then value to update with can be determined in an IIf() for each field. Use VBA to build and execute action SQL statement.
CurrentDb.Execute "UPDATE dbo_MasterSalesForecast_Test " & _
"INNER JOIN MasterSalesForecastUpdate " & _
"ON (dbo_MasterSalesForecast_Test.SubTo=MasterSalesForecastUpdate.Item) " & _
"AND (dbo_MasterSalesForecast_Test.Planner=MasterSalesForecastUpdate.Planner) " & _
"SET [YY:" & Month(Date()) & "] = [YY" & Format(Date(),"mmm") & "]," & _
"[YY:" & Month(DateAdd("m",1,Date())) & "] = [YY" & Format(DateAdd("m",1,Date()),"mmm") & "]," & _
"[YY:" & Month(DateAdd("m",2,Date())) & "] = [YY" & Format(DateAdd("m",2,Date()),"mmm") & "]"

Is there a way to combine all the outputs into one in MS-ACCES?

I want to make a SQL Filter in MS-Acces where I have the Option to filter all the Elements in the table. But when I make the UNION SELECT, I can show only 1 column in each row, so I made database_geräte.* to database_geräte.ID .
This works fine now, but I want all the Outputs from the database_geräte.ID select into one row, so that I can Filter all of them at once.
I tried to make a GROUPCONCAT, but that gives me an error.
SELECT database_geräte.ID, dbo.GROUPCONCAT (STRINGVALUE) FROM database_geräte
UNION
SELECT database_geräte.Gerät FROM database_geräte;
I also tried to make a count on the
database_geräte.ID
But then I get the value of the database_geräte.ID select, which doesn't fit in the filter because a ID with that number doesn't exist...
The SQL Select:
SELECT database_geräte.ID, dbo.GROUPCONCAT FROM database_geräte
UNION
SELECT database_geräte.Gerät FROM database_geräte;
The SQL filter in VBA:
sql = "SELECT* FROM database1 WHERE Gerät = '" & Me.GeräteFilter & "'"
Me.sb_1.Form.RecordSource = sql
Me.sb_1.Form.Requery
So the Filter should show an option where I can filter all the elements of the table and show it in the subform.

I just made an UNION that gives me all the data at once.
The SQL Select:
SELECT ID, Gerät FROM database_geräte UNION select "*" as ID, "Alle" as Gerät from database_geräte;
Then I made a function, that I can give to two Filters:
sql = "SELECT database_geräte.Gerät, database1.Name, database1.Grund, database1.Gerät_ID" _
& " FROM database_geräte INNER JOIN database1 ON database_geräte.ID = database1.Gerät_ID " _
& "" & IIf(Me.GeräteFilter <> "*", "Where database1.Gerät_ID = " & Me.GeräteFilter & " ", "") & " " _
& "" & IIf(Me.Person <> "Alle", IIf(Me.GeräteFilter <> "*", " AND database1.Name = '" & Me.Person & "'", "WHERE database1.Name = '" & Me.Person & "'"), "") & ""
Me.sb_1.Form.RecordSource = sql
Me.sb_1.Form.Requery

Query syntax on a large inner-joined select query linked to a control giving runtime 3071 error message

I am getting Runtime error message 3071 on the following query stating that the query is too complex. I have created queries in the past which have seemed more complex than this one. I would like to understand what generates this message:
sql_get = "SELECT tblValueChain01.IDMacroProcesso, tblValueChain02.IDMicroProcesso02, tblValueChain03.ID, tblDependencies01.ID AS DependencyID, tblValueChain02.MicroProcesso02, tblValueChain01.MacroProcess, tblValueChain01.TeamLead, tblValueChain01.LastOrganisationDate, tblValueChain01.TempiIndeterminati, tblValueChain01.TempiDeterminati, tblValueChain01.Interinali, tblValueChain01.PartTime, tblValueChain01.DailyMinutesAverage AS Minutes01, tblValueChain01.DailyMinutesHigh AS Minutes01H, tblValueChain01.DailyMinutesLow AS Minutes01L, tblValueChain02.MicroProcesso02, " & _
"tblValueChain02.DailyMinutesAverage AS Minutes02, tblValueChain02.DailyMinutesHigh AS Minutes02H, tblValueChain02.DailyMinutesLow AS Minutes02L, tblValueChain03.MicroProcess, tblValueChain03.MinutesPerDay AS Minutes03, tblValueChain03.MinutesPerDayHigh AS Minutes03H, tblValueChain03.MinutesPerDayLow AS Minutes03L, tblDependencies01.FlowDescription, tblDependencies01.FlowType, tblTeamsDepartments.Department, tblTeams.Team, tblDependencies01.Precision, " & _
"tblDependencies01.ServiceDelivery , tblDependencies01.RiskReduction, tblDependencies01.CapacityCreation, tblDependencies01.TargetCapacityCreation, tblDependencies01.Feasibility, tblDependencies01.Timeframe, tblDependencies01.Priority, tblDependencies01.Note, tblDependencies01.RedundantControls, tblDependencies01.RedundantControlsNotes, tblDependencies01.RedundantControlsPotSolution, tblDependencies01.RedundantControlsNotesSymbol, tblDependencies01.RedundantControlsPotSolSymbol, tblDependencies01.RolesAndResponsibilities, tblDependencies01.RolesAndResponsibilitiesNotes, " & _
"tblDependencies01.RolesAndResponsibilitiesPotSolution , tblDependencies01.RolesResponNotesSymbol, tblDependencies01.RolesRespPotSolSymbol, tblDependencies01.SubstandardSvcs, tblDependencies01.SubstandardSvcsNotes, tblDependencies01.SubStandardSvcsPotSolution, tblDependencies01.SubStandardSvcsNotesSymbol, tblDependencies01.SubStandardSvcsPotSolSymbol, tblDependencies01.KnowledgeGaps, tblDependencies01.KnowledgeGapsNotes, tblDependencies01.KnowledgeGap, " & _
"PotSolution , tblDependencies01.KnowledgeGapsNotesSymbol, tblDependencies01.KnowledgeGapsPotSolSymbol, tblDependencies01.ExcessiveOversight, tblDependencies01.ExcessiveOversightNotes, tblDependencies01.ExcessiveOversightPotSolution, tblDependencies01.ExcessiveOversightNotesSymbol, tblDependencies01.ExcessiveOversightPotSolSymbol, tblDependencies01.UpstreamErrors, tblDependencies01.UpstreamErrorsNotes, tblDependencies01.UpstreamErrorsPotSolution, tblDependencies01.UpstreamErrorsNotesSymbol, tblDependencies01.UpstreamErrorsPotSolSymbol, tblDependencies01.DefectsRework, " & _
"tblDependencies01.DefectsReworkNotes , tblDependencies01.DefectsReworkPotSolution, tblDependencies01.DefectsReworkNotesSymbol, tblDependencies01.DefectsReworkPotSolSymbol, tblDependencies01.OverProduction, tblDependencies01.OverproductionNotes, tblDependencies01.OverproductionPotSolution, tblDependencies01.OverproductionNotesSymbol, tblDependencies01.OverproductionPotSolSymbol, tblDependencies01.MotionTransport, " & _
"tblDependencies01.MotionTransportNotes , tblDependencies01.MotionTransportPotSolution, tblDependencies01.MotionNotesSymbol, tblDependencies01.MotionSolSymbol, tblDependencies01.DowntimeWaiting, tblDependencies01.DowntimeWaitingNotes, tblDependencies01.DowntimeWaitingPotSolution, tblDependencies01.WaitDowntimeNotesSymbol, tblDependencies01.WaitDowntimeSolSymbol, tblDependencies01.ExcessiveHandoffs, tblDependencies01.ExcessiveHandoffNotes, tblDependencies01.ExcessiveHandoffPotSolution, " & _
"tblDependencies01.ExcessiveHandoffsSymbol , tblDependencies01.ExcessiveHandoffsPotSolSymbol, tblDependencies01.RCSLABreachInternal, tblDependencies01.RCSLABreachExternal, tblDependencies01.RCCorporatePolicyBreach, tblDependencies01.RCOperatingModelDiscrepancy, tblDependencies01.RRSLABreachInternal, tblDependencies01.RRSLABreachExternal, tblDependencies01.RRCorporatePolicyBreach, tblDependencies01.RROperatingModelDiscrepancy, tblDependencies01.SSSLABreachInternal, tblDependencies01.SSSLABreachExternal, tblDependencies01.SSCorporatePolicyBreach, " & _
"tblDependencies01.SSOperatingModelDiscrepancy , tblDependencies01.KGSLABreachInternal, tblDependencies01.KGSLABreachExternal, tblDependencies01.KGCorporatePolicyBreach, tblDependencies01.KGOperatingModelDiscrepancy, tblDependencies01.EOSLABreachInternal, tblDependencies01.EOSLABreachExternal, tblDependencies01.EOCorporatePolicyBreach, tblDependencies01.EOOperatingModelDiscrepancy, tblDependencies01.UESLABreachInternal, tblDependencies01.UESLABreachExternal, tblDependencies01.UECorporatePolicyBreach, tblDependencies01.UEOperatingModelDiscrepancy, tblDependencies01.DefSLABreachInternal, " & _
"tblDependencies01.DefSLABreachExternal , tblDependencies01.DefCorporatePolicyBreach, tblDependencies01.DefOperatingModelDiscrepancy, tblDependencies01.OPSLABreachInternal, tblDependencies01.OPSLABreachExternal, tblDependencies01.OPCorporatePolicyBreach, tblDependencies01.OPOperatingModelDiscrepancy, tblDependencies01.EHSLABreachInternal, tblDependencies01.EHSLABreachExternal, tblDependencies01.EHCorporatePolicyBreach, " & _
"tblDependencies01.EHOperatingModelDiscrepancy , tblDependencies01.DTSLABreachInternal, tblDependencies01.DTSLABreachExternal, tblDependencies01.DTCorporatePolicyBreach, tblDependencies01.DTOperatingModelDiscrepancy, tblDependencies01.ECSLABreachInternal, tblDependencies01.ECSLABreachExternal, tblDependencies01.ECCorporatePolicyBreach, tblDependencies01.ECOperatingModelDiscrepancy " & _
"FROM (tblTeamsDepartments INNER JOIN tblTeams ON tblTeamsDepartments.ID = tblTeams.Department) INNER JOIN (tblValueChain01 INNER JOIN ((tblValueChain03 INNER JOIN tblValueChain02 ON tblValueChain03.IDMacroProcess = tblValueChain02.IDMicroProcesso02) INNER JOIN tblDependencies01 ON tblValueChain03.ID = tblDependencies01.IDSubProcess) ON tblValueChain01.IDMacroProcesso = tblValueChain02.IDMacroProcesso01) ON tblTeams.ID = tblDependencies01.Group WHERE [tblDependencies01].[ID]= '" & ID & "'"
Form_frmValueChainDynamic01.Form.RecordSource = sql_get

Possible typo:
...
INNER JOIN tblValueChain02 ON tblValueChain03.IDMacroProcess = tblValueChain02.IDMicroProcesso02)`
...
...perhaps should be IDMacroProcesso (missing "o" at the end of this field)?
Is [tblDependencies01].[ID] a number field? If so, then in your WHERE clause you've used single quotes denoting you're expecting to match a string; so this:
WHERE [tblDependencies01].[ID]= '" & ID & "'"
...should be written like this, if ID is a number:
WHERE [tblDependencies01].[ID]=" & ID
You've referred to most fields in your SELECT clause using the tableName.fieldName convention except for PotSolution (this may not be an issue, but it's good to be consistent!)
Some more things to try if the above doesn't work: http://allenbrowne.com/subquery-02.html#QueryTooComplex

How to make stored procedure in if..End if condition

I am beginner at stored procedures. I tried the following stored procedure in IF...End If condition so how to make it ... I am confused.... so anyone create it
strSql = "SELECT count(*) " & _
" FROM hist_billgen_report r, hist_billgen_header h " & _
" WHERE r.invoice_number=h.invoice_number " & _
" and h.macnum = '" & l_macnum & "' " & _
" and r.rep_type = 1 " & _
" and r.rep_call_type = '" & line_type & "' " & _
" and h.billing_job_id = '" & arg_job & "' "
'Special code for data lines for Newcore
If gcompany = "NCW" Then
strSql += " and r.rep_number not in ( "
strSql += "select distinct a.mdn from order_wireless a where"
strSql += " a.id in"
strSql += " ("
strSql += " select c.serviceid from cust_charge_file b, service_charges c, main_company_utilities d"
strSql += " where(b.chg_main_index = c.chargeid)"
strSql += " and c.serviceid = a.id"
strSql += " and (b.chg_main_category_id = d.utilities_id and d.utilities_type = 'CS' and (utilities_desc_short like '%FDS1%' or utilities_desc_short like '%FDS2%' or utilities_desc_short like '%FDS3%' or utilities_desc_short like '%MBS1%' or utilities_desc_short like '%MBS2%' or utilities_desc_short like '%MBS3%' ) )"
strSql += " )"
strSql += " and a.accountnumber = '" & l_macnum & "' "
strSql += " )"
End If

Putting a query into a stored procedure doesn't necessarily always mean a performance increase. Depending on the data in your tables, this query could be quite slow due to the OR LIKES '%%' in it, but you could do something like this:
create procedure [dbo].[spname]
#l_macNum int -- note, you haven't given a lot of information, create all query parameters with appropriate types here
-- more parameters
#arg_job int -- same
AS
BEGIN
if (#company = 'NCW')
begin
SELECT count(*)
FROM hist_billgen_report r, hist_billgen_header h
WHERE r.invoice_number=h.invoice_number
and h.macnum = #l_macNum
-- etc
and r.rep_number not in (
-- etc
)
end
else
begin
SELECT count(*)
FROM hist_billgen_report r, hist_billgen_header h
WHERE r.invoice_number=h.invoice_number
and h.macnum = #l_macNum
-- etc
end
END
GO
note the If and else logic are completely separate queries, as you cannot do what I think you were hoping to do in a contiguous query, without using dynamic sql. there are certain caveats to this but given you're new to sql, going to stick with that
I used -- etc as place holders for your text, as I'm not going to provide the entire solution :P
If that doesn't make sense, let me know.

SQL decode on column4 but only when column5 is distinct

I need to change the sum(decode()) expressions that are like
SUM(Decode(vcon.WAGON_TYPE_CODE,'MS',1,0))
to something that counts rows with vcon.WAGON-TYPE-CODE = 'MS' but only when wag.ACI-TAG-NO is distinct.
So if two columns look like this
vcon.WAGON_TYPE_CODE wag.ACI_TAG_NO
MS HI1111
SS C99999
MS HI1111
MS HI7777
SS HI8888
MS HI6666
The expression needs to return the number 3 rather than 4 as SUM(Decode(vcon.WAGON_TYPE_CODE,'MS',1,0)) currently does.
Any suggestions?
querySELECT = "SELECT "
querySELECT = querySELECT & "trn.WID_DATE, "
querySELECT = querySELECT & "trn.MINE_CODE, "
querySELECT = querySELECT & "trn.TRAIN_CONTROL_ID, "
querySELECT = querySELECT & "trn.NUM_CARS as HBD_Car_Count, "
querySELECT = querySELECT & "SUM(Decode(vcon.WAGON_TYPE_CODE,'MS',1,0)) M_Series, "
querySELECT = querySELECT & "(SUM(Decode(vcon.WAGON_TYPE_CODE,'SS',1,0))-SUM(Decode(wag.ACI_TAG_NO,'HI0000',1,0))) S_Series, "
querySELECT = querySELECT & "SUM(Decode(vcon.WAGON_TYPE_CODE,'CS',1,0)) C_Series, "
querySELECT = querySELECT & "SUM(Decode(wag.ACI_TAG_NO,'HI0000',1,0)) as No_Tag, "
querySELECT = querySELECT & "(COUNT(1) - trn.NUM_CARS) DB_Mismatch "
queryFROM = "FROM widsys.consist con, widsys.train trn, widsys.wagon wag, widsys.v_consist_ore_detail vcon "
queryWHERE = "WHERE trn.TRAIN_RECORD_ID = con.TRAIN_RECORD_ID "
queryWHERE = queryWHERE & "AND con.WAGON_ID = wag.WAGON_ID "
queryWHERE = queryWHERE & "AND ((vcon.CONSIST_ID=con.CONSIST_ID) "
queryWHERE = queryWHERE & "AND trn.MINE_CODE In (" & mine & ") "
queryWHERE = queryWHERE & "AND (trn.DIRECTION='N') "
queryWHERE = queryWHERE & "AND (wag.ACI_TAG_TYPE In ('CONTROL','SLAVE','ORE')) "
queryWHERE = queryWHERE & "AND (trn.WID_DATE>={ts '" & startDate & "'} "
queryWHERE = queryWHERE & "AND trn.WID_DATE<={ts '" & endDate & "'})) "
queryGROUPBY = "GROUP BY trn.WID_DATE, trn.MINE_CODE, trn.TRAIN_CONTROL_ID, trn.NUM_CARS "
queryORDERBY = "ORDER BY trn.WID_DATE DESC"

I think the following should work (this count the distinct wag.ACI_TAG_NO only when vcon.WAGON_TYPE_CODE='MS') :
COUNT(DISTINCT Decode(vcon.WAGON_TYPE_CODE,'MS',wag.ACI_TAG_NO,NULL))
e-g:
SQL> WITH data AS (
2 SELECT 'MS' WAGON_TYPE_CODE, 'HI1111' ACI_TAG_NO FROM DUAL UNION ALL
3 SELECT 'SS', 'C99999' FROM DUAL UNION ALL
4 SELECT 'MS', 'HI1111' FROM DUAL UNION ALL
5 SELECT 'MS', 'HI7777' FROM DUAL UNION ALL
6 SELECT 'SS', 'HI8888' FROM DUAL UNION ALL
7 SELECT 'MS', 'HI6666' FROM DUAL
8 )
9 SELECT COUNT(DISTINCT decode(WAGON_TYPE_CODE,'MS',ACI_TAG_NO,NULL))
10 FROM DATA
11 ;
COUNT(DISTINCTDECODE(WAGON_TYP
------------------------------
3
Cheers,
--
Vincent

You could use a subquery that filters duplicate tags. Your query is pretty complex, but this would calculate just the sum you're looking for:
SELECT SUM(Decode(sub.WAGON_TYPE_CODE,'MS',1,0))
FROM (
SELECT DISTINCT vcon.WAGON_TYPE_CODE, wag.ACI_TAG_NO
FROM widsys.wagon wag
INNER JOIN widsys.consist con
ON con.wagon_id = wag.wagon_id
INNER JOIN widsys.v_consist_ore_detail vcon
ON vcon.CONSIST_ID = con.CONSIST_ID
) sub
The DISTINCT makes sure there is only one row per (wagon_type,aci_tag_no) combination.