topic Re: Identifier with 2 results - mapping load in QlikView

Identifier with 2 results - mapping load

blunckc1 — Wed, 25 Nov 2020 16:16:04 GMT

Hi all,

Problem: I have a situation where a uniqueID can be 2 different results. See below:

Library Item Identifier	Program Name
site-induction-program-zillmere-child-health-centre	General Evacuation and First Response
site-induction-program-zillmere-child-health-centre	Site Induction

I think I need to handle this through two mapping tables, so I have created two spreadsheets where the first has the following:

Library Item Identifier	Program Name
site-induction-program-zillmere-child-health-centre	General Evacuation and First Response

And the second has the following:

Library Item Identifier	Program Name
site-induction-program-zillmere-child-health-centre	Site Induction

My logic is to load the same table of data twice, but applymap the first table in the first time round, and then applymap the second table the second time round. Then concatenate the two tables together.

Unfortunately I keep getting a "Field names must be unique within table" error. I'm stumped, please help if you can!

Here is the full load script:

//Load and map the mandatory training library items to their program name

ProgramName:

Mapping LOAD [Library Item Identifier],

[Program Name]

FROM

MappingTables\MandatoryTrainingPrograms.xls

(biff, embedded labels, table is Sheet1$);

//Load and map the duplicate mandatory training library items to their program name

ProgramName2:

Mapping LOAD [Library Item Identifier],

[Program Name]

FROM

MappingTables\MandatoryTrainingProgramsDuplicate.xls

(biff, embedded labels, table is Sheet1$);

//Load the TEACHQ data

Training1:

LOAD Username as PID,

Email,

[Library Item Identifier],

[Library Item],

date(floor([Completed Date]),'DD/MM/YYYY') as CompletedDate

FROM

QlikCorporateMandatoryTrainingReportAllEmployees.xlsx

(ooxml, embedded labels, table is Sheet1);

//Filter the TEACHQ data so it only shows the last completed date for each employees library item

Left Join (Training1)

Load PID,

[Library Item],

date(max(CompletedDate)) as maxCompletedDate

Resident Training1

Group by PID,[Library Item];

//Create a new table that only shows the last completed date for each library item by employee

Noconcatenate

TrainingData:

Load *

Resident Training1

WHERE CompletedDate=maxCompletedDate;

Drop table Training1;

//Load the current contracts table to identify an employees earliest start date in CHQ

EmployeesStartDate:

LOAD Pers.ID as PID,

[Start Date]

FROM

EmployeeContracts.xls

(biff, embedded labels, table is Sheet1$);

Left Join (EmployeesStartDate)

LOAD PID,

date(min([Start Date])) as minstartdate

Resident EmployeesStartDate

Group by PID;

//Create a new table of employees that has their PID and their minStartDate in CHQ

Noconcatenate

CleanEmployee:

LOAD PID,

[Start Date] as MinStartDate

Resident EmployeesStartDate

WHERE [Start Date]=minstartdate;

Drop table EmployeesStartDate;

//Create a new table of employees that has their PID, their minStartDate in CHQ and the last time they completed each library item and map the program name

Left Join (CleanEmployee)

LOAD

ApplyMap('ProgramName', [Library Item Identifier], 'UpdateMappingTable') as [Program Name]

Resident TrainingData;

Drop table TrainingData;

//Reload the table of employees that has their PID, their minStartDate in CHQ and the last time they completed each library item and map the other program name so it concatenates

concatenate LOAD

ApplyMap('ProgramName2', [Library Item Identifier], 'UpdateMappingTable') as [Program Name]

Resident CleanEmployee;

Re: Identifier with 2 results - mapping load

swuehl — Tue, 13 Sep 2016 15:45:40 GMT

In your last LOAD, [Program Name] is already part of the input table.

You would need to list all fields except [Program Name] from CleanEmployee instead of using the star symbol * to get around this.

But if you want to duplicate your records, why don't you join your employee table with a table with your two records:

Library Item Identifier	Program Name
site-induction-program-zillmere-child-health-centre	General Evacuation and First Response
site-induction-program-zillmere-child-health-centre	Site Induction

Or create a linked table for program name instead duplicating your employee records?

Re: Identifier with 2 results - mapping load

blunckc1 — Tue, 13 Sep 2016 23:03:57 GMT

Thank you so much Stefan! I feel like a moron though for not realising that at first though... Haha.

If you have the time, can you explain your other 2 solutions as I don't understand the logic?

Re: Identifier with 2 results - mapping load

swuehl — Wed, 14 Sep 2016 05:53:32 GMT

The other two options may look like (untested code):

//Create a single table for lib item Program names:

//assuming each table shows a single entry per item

ProgramName:

LOAD [Library Item Identifier],

[Program Name],

'Original' as Source

FROM

MappingTables\MandatoryTrainingPrograms.xls

(biff, embedded labels, table is Sheet1$);

Concatenate (ProgramName)

LOAD [Library Item Identifier],

[Program Name],

'Duplicate' as Source

FROM

MappingTables\MandatoryTrainingProgramsDuplicate.xls

(biff, embedded labels, table is Sheet1$);

//Load the TEACHQ data

Training1:

LOAD Username as PID,

Email,

[Library Item Identifier],

[Library Item],

date(floor([Completed Date]),'DD/MM/YYYY') as CompletedDate

FROM

QlikCorporateMandatoryTrainingReportAllEmployees.xlsx

(ooxml, embedded labels, table is Sheet1);

//Filter the TEACHQ data so it only shows the last completed date for each employees library item

Left Join (Training1)

Load PID,

[Library Item],

date(max(CompletedDate)) as maxCompletedDate

Resident Training1

Group by PID,[Library Item];

//Create a new table that only shows the last completed date for each library item by employee

Noconcatenate

TrainingData:

Load *

Resident Training1

WHERE CompletedDate=maxCompletedDate;

Drop table Training1;

//Load the current contracts table to identify an employees earliest start date in CHQ

EmployeesStartDate:

LOAD Pers.ID as PID,

[Start Date]

FROM

EmployeeContracts.xls

(biff, embedded labels, table is Sheet1$);

Left Join (EmployeesStartDate)

LOAD PID,

date(min([Start Date])) as minstartdate

Resident EmployeesStartDate

Group by PID;

//Create a new table of employees that has their PID and their minStartDate in CHQ

Noconcatenate

CleanEmployee:

LOAD PID,

[Start Date] as MinStartDate

Resident EmployeesStartDate

WHERE [Start Date]=minstartdate;

Drop table EmployeesStartDate;

//Create a new table of employees that has their PID, their minStartDate in CHQ and the last time they completed each library item and map the program name

Left Join (CleanEmployee)

LOAD

Resident TrainingData;

Drop table TrainingData;

Now you should have your clean table and a linked ProgramData table, which you can join to the CleanEmployee table if you want, duplicating the records as with your mapping approach.

But maybe you don't need to join, just leave the tables linked to each other.