drop table if exists t;

create table t (a decimal(7,2),b decimal(7,2)) engine=ColumnStore;

insert into t(a,b) values (1,1),(2,3),(3,4);

-- query 1, works fine

-- for each row, return the percentage that the sum of 2 columns a and b represents in the total of all rows

select

(a+b)/sum(a+b) over()

from t;

-- query 2, Error 1815, IDB-9024, 'b' is not in tuple

-- same as query1, just an extra subselect

select

(a+b)/sum(a+b) over()

from (

	select a,b from t

)t1;

-- query 3, works fine

-- same as query1, just sum(a) instead of sum(a+b)

select

a/sum(a) over()

from (

	select a,b from t

)t1;