Column Missing after Join 2 data tables into 1 merge data table using scripting

[#1]

Hi,

I want to join 2 data tables into 1 merge data table using scripting.

I already joint the 2 data tables into 1 joint data table manually, so I copied the same script from the joint data table into my master script.

Somehow, when I run the master script, all the chosen columns from dt2 not included in the joint data table.

Why it is not working?

Data Table( "AVIYield (Datasheet)" ) << Join(
	With( Data Table( "Process_History_LotNoListingBeforeAVI" ) ),
	Update,
	Select(
		:Machine Type, :Machine No, :Lot No, :Device, :Recipe, :Start Lot Time, :End Lot Time,
		:Total Inspected Unit, :Total Dummy Unit, :Total Reject Unit,
		:Overall Yield Include dummy, :Yield Exclude dummy, :FBMissing Bond, :FBAccuracy,
		:FBBroken Wire, :FBBall Size, :SBMissing Bond, :SBPlacement, :SBBroken Wire,
		:SBWedge Size, :WTDeviation, :WTBroken Wire, :Die Shift, :Die Surface, :Die Rotate,
		:Die Epoxy Insuff, :Die Expoxy Excess, :Die Substrate, :SBBall Missing Bond,
		:SBBall Broken Wire, :SBBall Accuracy, :Name( "NU-No Unit" ), :Name( "DU-Destroy Unit" ),
		:Name( "ID-Incomplete Die" ), :Name( "DED-Die Edge Defect" ),
		:Name( "DP-Die Placement" ), :Name( "EG-Excessive Glue" ),
		:Name( "IG-Insufficient Glue" ), :Name( "DO-Die Orientation" ),
		:Name( "NWB-No Wire Bond" ), :Name( "MW-Multiple Wire" ), :Name( "BP-Ball Placement" ),
		:Name( "DW-Distorted Wire" ), :Name( "IW-Incomplete Wire" ),
		:Name( "FM-Foreign Material" ), :Name( "MP-Missing Phosphor" ), :PackageFamily
	),
	SelectWith( :Process Oper, :Process Mach No, :In Time, :Out Time ),
	By Matching Columns( :Lot No = :Lot No ),
	Drop multiples( 0, 0 ),
	Include Nonmatches( 1, 0 ),
	Preserve main table order( 1 ),
	Output Table( "JoinT" )
);

[#2 · Accepted solution]

Hello! If you look at the documentation for the Join function (here) it states that "when you use Update main table with data from second table, Select Columns for joined table is not applicable." So it will just look to update the existing columns you have in the main table. Try either not selecting that Update command or using the separate Tables > Update tool to try and accomplish your goal. 

[#3]

Thanks a lot. After I did not select that update command but continue from the 2nd table, it works.