jordi fita mas 880c4f53b2 Add the function to get the next invoice number
I can not use a PostgreSQL sequence because invoices need to be gapless,
and sequences are designed to not rollback, for performance reasons.  In
this case, the performance is secondary because the law does not care.
2023-02-17 14:48:24 +01:00
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2023-02-09 11:42:31 +01:00