schemas/vegbien.sql: 1_to_1 and *_unique_within unique indexes intended to operate only when sourceaccessioncode is NULL: Changed to use `sourceaccessioncode IS NULL` WHERE condition instead of COALESCE element, since the sourceaccessioncode is not actually needed for the uniquification (it is already globally unique within the datasource if it's not NULL; this just covers the case where it is NULL)
schemas/vegbien.sql: 1_to_1 and *_unique_within unique indexes intended to operate only when sourceaccessioncode is NULL: Changed to use `sourceaccessioncode IS NULL` WHERE condition instead of COALESCE element, since the sourceaccessioncode is not actually needed for the uniquification (it is already globally unique within the datasource if it's not NULL; this just covers the case where it is NULL)