Help with M code + Vlookup

[Anonymous]

Hello!

I am creating a complex database that will have import info from Share point list and connect to Data Lake databases.

I have no experience/knowledge with  M code but I would like to use it instead of DAX because its possible to filter the rows in the query mode that will improve a lot the speed/size of this power bi file since I will use a lot of large databases.

I will make also easier when I will use the same table mirror for this table for other filtering conditions for the same table.

Table A

ECO	DICE MECO
686638	596517
686638	596517
686638	612180
686638	621342

Table B

FA Proj. ID	Proj. ref. type	Proj. ref. DICE MECO(s) / ECO(s)
22	DICE MECO	596517
23	DICE MECO	643711
24	DICE MECO	660949
25	DICE MECO	685692
26	DICE MECO	695569
27	DICE MECO	704182
28	ECO	686638
30	DICE MECO	668426
31	DICE MECO	612180
31	DICE MECO	621342
33	DICE MECO	685694

I would like to add the column "FA Proj. ID" in the table A based on the values for column B with 2 variants, when is ECO in the Proj. ref. type should look in the 1st column in the table A  or when its DICE MECO in the Proj. ref. type for the 2nd column for the table A when is a match with the values for the column DICE MECO(s) / ECO(s) from the table B.

I tried to search similar cases but I didn´t find it.

Hope that I can get help with that!

Best regards,

André Fortunato

[v-janeyg-msft]

Hi, @Anonymous 

In this case, do you want 22 or 28? Can you show me the desired result? 

Best Regards

Janey Guo

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Anonymous]

Hello @v-janeyg-msft !

Thanks a lot for your reply and support!

My apologies for that, I added wrong values in the ECO column. See below the desired result:

Best regards,

André Fortunato

[v-janeyg-msft · Accepted solution]

Hi, @Anonymous 

Sorry for the late reply because of the weekend. You can try the custom column in PQ. Sample file is below.

Like this:

let 
t1=Table.SelectRows(#"TableB",(x)=>x[DICE_MECO ECO]=[ECO]),
t2= Table.SelectRows(#"TableB",(x)=>x[DICE_MECO ECO]=[DICE MECO]) 
in 
if Table.RowCount(t1)>0
then List.Sum(t1[FA Proj. ID])
else if Table.RowCount(t2)>0
then List.Sum(t2[FA Proj. ID])
else null

Best Regards

Janey Guo

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Anonymous]

Hi @v-janeyg-msft !

I tested the code and works great.

I just have a new issue that takes much more time to load the table A from a OBDC data source but I can load this table by a routine.

Many thanks once again and have a great weekend,

Regards, André

[Anonymous]

Hi @v-janeyg-msft ,

No worries, I am in summer holidays from last Monday but I will be able to test the proposed solution only in the middle/end of the next week.

Thanks a lot once again for your help!

Best regards, André

[v-janeyg-msft]

Hi, @Anonymous 

I need a complete logic, If the two columns of a row in table A can match the id in table B, how to deal with it, is there such a situation? Please explain.

Best Regards

Janey Guo

[Anonymous]

Hi @v-janeyg-msft !

The filter ut will be always the table B, if column Proj. type ref. is a ECO they should vlookup the value from the DICE MECO(s) / ECO(s) in the column ECO from table A and add a new column with the FA. Proj. iD in the table A from the table B, the same logic if the value from the column Proj. type ref. From table B is a DICE MECO but should vlookup the values from the table A from the column DICE MECO instead.

it will be always distinct values for ECO or MECO in the table A or B but I am only interested to retrieve in the table A the DICE MECO / ECOs from table B and tag the Proj ID in the table A.

Please let me know if you need more input 🙂

Best regards,

André Fortunato 

[v-janeyg-msft]

@Anonymous  I understand and I will reply to you later.