fix: allow query on columns with space in name

[Geo-W]

As sql server allows empty space in column name, make it adaptable to columns with space in its name.

[tomhoule]

This looks good. Do you think this would be straightforward to check in a test?

[Geo-W]

This looks good. Do you think this would be straightforward to check in a test?

Sure! Thank you very much~

[descawed]

I was bitten by this issue today when attempting to do a bulk insert to a table having columns with spaces in the name. Is this just waiting on a test to be merged? I can take a crack at it if @Geo-W isn't able to. The code should probably also be updated to handle the case where the column name contains the ] character, which would need to be escaped by doubling it.