JIT compilation of some SQL code, including support for fast evaluation of expressions
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leaves me wondering what the general benefit is to the user. Also, spelling out "Just-In-Time (JIT)" here seems warranted.
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No longer retain WAL that spans two checkpoints (Simon Riggs)
The retention of WAL records for only one checkpoint is required.
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Maybe: "Servers now only ensure that a single checkpoint record is present in the locally retained WAL. Previously it would ensure at least two checkpoints were available for recovery."
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Also, if any table mentioned in VACUUM uses a column list, then ANALYZE keyword must be supplied; previously ANALYZE was implied in such cases.
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Should that be mentioned in the compatibility notes?
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Add the ability to define PL/pgSQL record types as not null, constant, or with initial values (Tom Lane)
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Found the commit message for this one - should we back-patch a documentation change indicating that this doesn't work prior to v11?