Have an env var named QSV_AUTOINDEX.

It will be a string with three positions - PUI:

• When P (for Primary Key) is 1, automatically create a primary key for a column with cardinality=rowcount, and there is no other column with cardinality=rowcount.
• When U (for Unique Index) is 1, create a unique index for ALL columns where cardinality=rowcount.
• When I (Index) is not zero, create an index for columns that have cardinality >= I.