Declare DB functions as language sql
and immutable
#543
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Description
Declares DB functions as
language sql
andimmutable
.Allows the query planner to make better decisions, see https://www.postgresql.org/docs/current/xfunc-volatility.html for details.
Also cleanup metrics update tasks, as well as remove special handling of Shedlock for H2-based tests by converting them to use PostgreSQL instead.
Addressed Issue
N/A
Additional Details
N/A
Checklist
This PR fixes a defect, and I have provided tests to verify that the fix is effectiveThis PR introduces new or alters existing behavior, and I have updated the documentation accordingly