Tue, 18 Jul 2023 12:50:34 +0200 wenzelm more uniform guard (!exists_table(table)): avoid "ALTER TABLE" on already existing table, which could lead to deadlocks if this is presently locked;
Tue, 18 Jul 2023 12:39:20 +0200 wenzelm removed unused "create_index": implicit index from primary_key is usually sufficient;
Tue, 18 Jul 2023 12:32:07 +0200 wenzelm clarified "vacuum" (again, reverting 0bd366fad888);
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