I want to make an array with several columns. The second and subsequent columns are specified as a range pulled from another sheet. The first column is a static constant, that is, every cell in the first column should have the very same literal string value, say 'foo'. I can't find the correct syntax. I'd have thought something like this would work:
={"foo", 'Other Sheet'!C2:F}
but I get "Function ARRAY_ROW parameter 2 has mismatched row size. Expected: 1. Actual: 999." Clearly "foo" needs to be "expanded" to a column with lots of rows. How do I do it, and where are tricks like this documented?
Maybe the answer to this question would give a start: How do I create an array containing a single column, every cell containing "foo", with the number of columns specified by a different range?
Here is an editable sheet illustrating the problem and the desired solution: https://docs.google.com/spreadsheets/d/17myzKVFN3SDQuubWNdP-dFAbdvdlRbZFkjRpLi2Fas8/edit?usp=sharing The exact question is this: what formula can I put in cell B9 of Sheet1 to get the current appearance of Sheet1? Notice that I don't know in advance how many rows there are in 'Other Sheet'. It's OK to assume that all rows of Other Sheet have a nonblank value in column C.
