how to query different columns and stack into new table in google sheet

Question

Hi I have columns like so, where it's auto fill every rows. Where column BCD is from source a, column EFG from source b and HIJ from source c

sheet data

A	B	C	D	E	F	G	H	I	J
1	Date	Name	Cost	Date	Name	Cost	Date	Name	Cost
2	2022-01-02	Alan	5	2022-01-03	James	6	2022-01-02	Timmy	5
3	2022-01-02	Hana	5	2022-01-03	Paul	6	2022-01-02	Jane	5

into summary sheet

A	B	C	D	E
1	Date	Name	Cost	Source
2	2022-01-02	Alan	5	sourceA
3	2022-01-02	Hana	5	sourceA
4	2022-01-03	James	6	sourceB
5	2022-01-03	Paul	6	sourceB
6	2022-01-02	Timmy	5	sourceC
7	2022-01-02	Jane	5	sourceC

How do I achieve this with formula query, stacking it on top one another. Source is using if but then how do you detect last row and used it for the if.

• the rows for each source might be different.

Answer 1

this is array: {} inside of it you can use comma , to put something next to each other or semicolon ; to put something under something else. eg. having:

={1,2;3,4}

will yield:

     A       B
   ------+-------+
1 |  1   |   2
   ------+-------+
2 |  3   |   4

in that manner you can do:

={QUERY(B:D);
  QUERY(E:G);
  QUERY(H:J)}

side note: if your locale is non-english then comma , in array is replaced by backslash \

Answer 2

Use array notation to combine the ranges, and combine them with either filter() or query() to remove the empty rows.

Filter docs

Query docs