Please help me with this Query formula: - google-sheets

Question

This is my data:
(The combination of Lot No. & Date is always unique)
Required result:
I used this:
=QUERY(Production!A:G, "SELECT A,B, C, D, G WHERE A is NOT NULL label C 'NEW LOT NO.', D 'NEW LOT NO. DATE' ", 1)
I am not able to figure how can I add column OLD ASSIGNED in my query formula, Please Help!
Here is the SHEET.
Thank you.
EDIT:
Can someone please provide me a solution which uses only query ( or nested query) and no other formulas like vlookup or filter or anything.

Answer 1

Try this:
=arrayformula(QUERY({Production!A:G,iferror(vlookup(Production!A1:A&"-"&Production!B1:B,{Production!C:C&"-"&Production!D:D,Production!G:G},2,false),)}, "SELECT Col1,Col2,Col8,Col3,Col4,Col7 WHERE Col1 is NOT NULL label Col3 'NEW LOT NO.', Col4 'NEW LOT NO. DATE', Col8 'OLD ASSIGNED' ", 1))
Or for query only:
=
query(
{
query({Production!A:G},"select Col7 where Col6 is not null order by Col4,Col3 label Col7 'OLD ASSIGNED'",1),
query({Production!A:G},"select Col1,Col2,Col3,Col4,Col7 where Col1 is not null order by Col2,Col1 label Col3 'NEW LOT NO.', Col4 'NEW LOT NO. DATE' ",1)
},
"select Col2,Col3,Col1,Col4,Col5,Col6 order by Col5,Col3",1)
This uses query only so you'll need to choose a sort order for the results since Lot No. 277 appears in Col A and Col C with different date order.
If you want your original sort order, then it can work like this if you're prepared to use sequence:
=
query(
{
query({Production!A:G},"select Col7 where Col6 is not null order by Col4,Col3 label Col7 'OLD ASSIGNED'",1),
query({Production!A:G,sequence(counta(Production!A:A)+countblank(Production!A:A),1)},"select Col1,Col2,Col3,Col4,Col7,Col8 where Col1 is not null order by Col2,Col1 label Col3 'NEW LOT NO.', Col4 'NEW LOT NO. DATE' ",1)
},
"select Col2,Col3,Col1,Col4,Col5,Col6 order by Col7",1)
sequence is used to generate a sequence of row numbers (because row() would require the arrayformula - which you don't want). The range of number in the sequence is counta(Production!A:A)+countblank(Production!A:A) which is the number of rows in the Production sheet.