The logical replication subscription side does not fire per-column
update triggers when applying an update change. (Per-table update
triggers work fine.) This patch fixes that. Should be backpatched to PG10.
A patch along these lines is also necessary to handle triggers involving
generated columns in the apply worker. I'll work on that separately.
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Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services