topic Re: Help with Where clause in QlikView

Help with Where clause

Mon, 04 Feb 2013 16:44:42 GMT

Hello,

I am trying to apply a filter like this:

I have the NumYearMonth field wich has numeric values eg: 1,10,15,etc, etc

I only need to retrieve one value and that is the penultimate, next to last, before to last one, secont last, however you want to call it.

The field should always contain a sequencial numeric value, so for instance if the highest number is 30, I only want the 29 value to be loaded.

The numbers may change reload after reload so I need something dinamic.

I was thinking something like

WHERE NumYearMonth = Max(NumYearMonth) -1

I have the below script;

QUALIFY *;

Chart3:

LOAD

AuditPhase,

AuditPhaseID,

[Region Only],

NumYearMonth,

[DDQ Submit]

Resident TABLE1

Where NumYearMonth = Max(NumYearMonth) -1 and

([AuditPhase]='DDQ' or [AuditPhase]='OSI' or [AuditPhase]='EDD');

But QlikView doesn't like that.

Any ideas how can I accomplish this?

Re: Help with Where clause

alexandros17 — Mon, 04 Feb 2013 16:53:36 GMT

Use the same table,

Second:

LOAD

Max(NumYearMonth) -1 as max_minus_1

resident "Tablename"

group by KEY

so you compute the max value minus 1 grouped by key fields, then you have to load first table

and do left join with the second one "Second"

It have to work.

Hope it helps

Re: Help with Where clause

Anonymous — Mon, 04 Feb 2013 19:56:08 GMT

Hi,

can you please provide a test data.

Regards

Re: Help with Where clause

Mon, 04 Feb 2013 20:10:39 GMT

Hello, use the idea of Alexandros17.

Once you create the auxiliary table, use the PEEK function to return the most value and use it in their condition.

Ex.:

QUALIFY *;

Chart3:

LOAD

AuditPhase,

AuditPhaseID,

[Region Only],

NumYearMonth,

[DDQ Submit]

Resident TABLE1;

Second:

LOAD

MAX(NumYearMonth) -1 as max_minus_1

resident Chart3;

Result:

LOAD

AuditPhase,

AuditPhaseID,

[Region Only],

NumYearMonth,

[DDQ Submit]

Resident Chart3

WHERE NumYearMonth = PEEK('max_minus_1') and

([AuditPhase]='DDQ' or [AuditPhase]='OSI' or [AuditPhase]='EDD');