Creating a column based on the string value from another table

[PowerBIGpig]

Hello!

I'm having problems... among many, I am trying to create a column in a table that will collect the name from another table and add it into this column...

Table 1 (Acc/Act/Comm/Web)

Purchase item text	Amount	WBS
ABC.1 item1	230	100001
XYZ	120	100003
random item	450	100003
ABC.1 item2	40000	200001
DEF item 1	200	100002
other random item	100	100002

I have table 2

(Activity List)

Work Package	Activity	WBS	Capital WBS
ABC	ABC.1	100001	200001
ABC	ABC.2	100001	200001
ABC	UNKNOWN1	100001	200001
DEF	DEF.1	100002	200002
DEF	UNKNOWN2	100002	200002
XYZ	XYZ.1	100003	200003
XYZ	UNKNOWN3	100003	200003

I would like to use Activity column in the Activity List table to to search through the string in the Purchase Item Text column to determine which Activity the item relates to, if the Purchase Item Text doesn't have the Activity in the string then the result should be the Unknown# that corresponds with the WBS. I'm hoping for a result such as this:

Purchase item text	Amount	WBS	Activity
ABC.1 item1	230	100001	ABC.1
XYZ.1	120	100003	XYZ.1
random item	450	100003	Unknown3
ABC.1 item2	40000	200001	ABC.1
DEF.1 item 1	200	100002	DEF.1
other random item	100	100002	Unknown2

Please help!

[Anonymous]

This is not a job for DAX. It's for Power Query.

Best
D