Re: [MS_AccessPros] Union Query load very slowly.

 

Dear Duane,

Thanks a  lot. By the way, do I need to add "All" to the first line before only "Select" as well?

Best Regards,

Kevin

On 19-Feb-2019 10:54 PM, Duane Hookom duanehookom@hotmail.com [MS_Access_Professionals] wrote:

 

Hi Kevin,

By default a union query attempts to display only unique records so it has to check all of the returned records for duplicates. If you don't want the "feature" and want your query to run faster try adding " ALL "

.....

UNION ALL SELECT

...

Regards.

Duane

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From: MS_Access_Professionals@yahoogroups.com <MS_Access_Professionals@yahoogroups.com> on behalf of Kevin qingqinga@yahoo.com [MS_Access_Professionals] <MS_Access_Professionals@yahoogroups.com>
Sent: Tuesday, February 19, 2019 8:42 AM
To: MS_Access_Professionals@yahoogroups.com
Subject: [MS_AccessPros] Union Query load very slowly.

 

Dear All,

I have a union query behind a unbound subform as below. It takes about
0.5 minutes to load. Is that any way to improve the loading speed?
Thanks in advance.


SELECT
ID,LetterType,TransactionID,TransactionType,OfficeLocation,CostType,Amount,RecordDate,IIf([Checked]=True,"已审核","")
As
CheckAlready,GroupAndRemark,AccountID,ActualTransactionDate,Month(ActualTransactionDate)
As ActualMonth,ELookup("AccountName","tblAccount","AccountID=" &
Nz([AccountID],0)) As Account,Year(ActualTransactionDate) As
ActualYear,FinalAmount FROM qryaTransaction

UNION SELECT
ID,LetterType,ManagerialCostID,TransactionType,OfficeLocation,ManagerialCostType,Amount,RecordDate,IIf([Checked]=True,"已审核","")
As
CheckAlready,Remark,AccountID,ActualTransactionDate,Month(ActualTransactionDate)
As ActualMonth,ELookup("AccountName","tblAccount","AccountID=" &
Nz([AccountID],0)) As Account,Year(ActualTransactionDate) As
ActualYear,FinalAmount FROM qrybManagerialCost

UNION SELECT
ID,LetterType,PromotionCostID,TransactionType,OfficeLocation,PromotionCostType,Amount,RecordedDate,IIf([Checked]=True,"已审核","")
As
CheckAlready,Remark,AccountID,ActualTransactionDate,Month(ActualTransactionDate)
As ActualMonth,ELookup("AccountName","tblAccount","AccountID=" &
Nz([AccountID],0)) As Account,Year(ActualTransactionDate) As
ActualYear,FinalAmount FROM qrycPromotionCost

UNION SELECT
ID,LetterType,OtherIncomeID,TransactionType,OfficeLocation,OtherIncomeType,Amount,RecordDate,IIf([Checked]=True,"已审核","")
As
CheckAlready,Remark,AccountID,ActualOtherIncomeDate,Month(ActualOtherIncomeDate)
As ActualMonth,ELookup("AccountName","tblAccount","AccountID=" &
Nz([AccountID],0)) As Account,Year(ActualOtherIncomeDate) As
ActualYear,FinalAmount FROM qrydOtherIncome

UNION SELECT
ID,LetterType,OtherCostID,TransactionType,OfficeLocation,OtherCostType,Amount,RecordDate,IIf([Checked]=True,"已审核","")
As
CheckAlready,Remark,AccountID,ActualOtherCostDate,Month(ActualOtherCostDate)
As ActualMonth,ELookup("AccountName","tblAccount","AccountID=" &
Nz([AccountID],0)) As Account,Year(ActualOtherCostDate) As
ActualYear,FinalAmount FROM qryeOtherCost
ORDER BY 12, 11;


Best Regards,

Kevin



------------------------------------
Posted by: Kevin <qingqinga@yahoo.com>
------------------------------------


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Posted by: Kevin <qingqinga@yahoo.com>

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