Fix sneaky bug where TVF sql statements cannot end in ; due to being wrapped by terraform provider in another SQL statement

[pdewilde]

TF will actually call

CREATE OR REPLACE TABLE FUNCTION mydataset.names(argument INT64)
AS (
  ${YOUR_QUERY_HERE}
);

Unfortunately, this means it looks different to how views are declared, as they seem to tolerate ending in a ;

[pdewilde]

This is a test. Testing123. I wonder if this is just markdown?