How to get filtered lookup table?

[SBGoh]

Hi,

I want to get 2 tables below and they are link by SO #. I want to get the CS No. with the highest POS # where Code = 'ZC'.

I am trying to use lookup table but seems not working. Can anyone advise ? Thank you! 

[danextian]

Hi @SBGoh 

I don't quite understand what you mean by you want to get 2 tables. If you're trying to get the CS No in Partner wherein the POS # is the max for each POS # and which SO # is equal to the current row in SO # in Sales Order, you can try either of these:

=
CALCULATE (
    MAX ( Partner[CS No.] ),
    FILTER (
        Partner,
        VAR MaxPO =
            CALCULATE ( MAX ( Partner[POS #] ), ALLEXCEPT ( Partner, Partner[SO #] ) )
        RETURN
            Partner[SO No] = EARLIER ( SalesOrder[SO N#] )
                && Partner[POS #] = MaxPO
                && Partner[Code] = "ZC"
    )
)


=
VAR MaxPO =
    CALCULATE (
        MAX ( Partner[POS #] ),
        FILTER ( Partner, Partner[SO #] = EARLIER ( SalesOrder[SO N#] ) )
    )
RETURN
    CALCULATE (
        MAX ( Partner[CS No.] ),
        FILTER (
            Partner,
            Partner[SO No] = EARLIER ( SalesOrder[SO N#] )
                && Partner[POS #] = MaxPO
                && Partner[Code] = "ZC"
        )
    )

 Otherwise, please post a sample data that we can copy-paste (not an image).

[SBGoh]

Hi, may I know what is the purpose of 'Earlier"? I try to read the explanation from Microsoft but I don't seems to understand. What if I don't use "Earlier"?

If my CS No. contain text like "P1234", can I still use "MAX" ? 

[SBGoh]

Hi, I have a Sales Order with SO # = 1900 with a list of 3 partners records. (The 2 tables are link by SO #).

The Code = 'ZC' refers to CS executive and there are 2 CS. I only want to display 1 CS record with highest POS #. In this case is the blue highlighed record with Code = 'ZC' and POS # = 0011 and CS No. = 2244.

Partner table

SO #	POS #	Code	CS No.
1900	0000	VE	1234
1900	0011	ZC	2244
1900	0000	ZC	3355

Sales Order table

SO #	POS #	Material
1900	0011	PartNum 1
1900	0022	PartNum 2

[danextian]

Please check the formulas i inititally provided. Either one should work.