Sequences aren't supported as a default value for mariadb

[far-blue]

When a sequence is used as the default value for a column, the NEXT VALUE FOR <sequence name> or nextval(<sequence name) string is used as a literal default value.

The correct behaviour would be to exclude the field from the insert if it is empty so to trigger the default value behaviour in the db.

A less correct but still acceptable behaviour would be to use the value as a raw value without quoting so the db executes the statement and correctly inserts the next sequence value.