Merge data of two cells in one by Serial Number

[#1]

I have a product manufacturing data. Some products are made using the material using two different lot. I need to merge all the lot information in one cell by SN. 

[#2 · Accepted solution]

I think there are some wish list items regarding this (some might be even mine but I cannot find them now)... but currently I would go with SQL query using GROUP_CONCAT (it is not the only option)

Names Default To Here(1);

dt = New Table("Untitled",
	Add Rows(7),
	Compress File When Saved(1),
	New Column("S", Character, "Nominal", Set Values({"1", "2", "3", "3", "5", "6", "6"})),
	New Column("M", Character, "Nominal", Set Values({"A1", "A2", "A3", "A4", "A5", "A6", "A7"}))
);

dt2 = Query(
	Table(dt, "t"),
"select S, GROUP_CONCAT(M, ', ') M
from t
group by S"
);

Edit:

Found the wish list item Add Listagg/Concatenate/GROUP_CONCAT to Summary platform and I have also created add-in for this Group Listagg Columns which does use Query() to build the table

[#3 · Accepted solution]

Not as eloquent as Jarmo's, but it shows a different approach

Names Default To Here( 1 );

dt = New Table( "Example",
	Add Rows( 7 ),
	Compress File When Saved( 1 ),
	New Column( "SN",
		Character,
		"Nominal",
		Set Values( {"1", "2", "3", "3", "5", "6", "6"} )
	),
	New Column( "Material Lot",
		Character,
		"Nominal",
		Set Values( {"A1", "A2", "A3", "A4", "A5", "A6", "A7"} )
	)
);

dtCombine = dt << Summary(
	Group( :SN ),
	Freq( "None" ),
	Weight( "None" ),
	Link to original data table( 0 )
);

dtCombine << New Column( "Material Lot",
	Character,
	set each value(
		Eval(
			Eval Expr(
				Concat Items(
					dt:Material Lot[dt <<
					get rows where( dt:SN == Expr( dtCombine:SN[Row()] ) )],
					", "
				)
			)
		);
	)
);

[#4]

I have some table with two material column. See atteched example. 

My current logic is splitting this table in to two. 

1. SN, M1

2. SN, M2

And than use Group_Contcat function, and than use update function to merge both table. It is working fine. But I was wondering if there is any batter (Short) way to do it.

 

[#5]

Thanks you, This exactly what I was look for