Fix checking of query type in plpgsql's RETURN QUERY command.

Avoid using a cursor in plpgsql's RETURN QUERY statement.

Improve management of statement timeouts.

Reset statement_timeout between queries of a multi-query string.

Flush logical mapping files with fd opened for read/write at checkpoint

Use a fd opened for read/write when syncing slots during startup, take 2.

Fix table rewrites that include a column without a default.

doc: move mention of log_min_error_statement in a better spot

Avoid use of wildcard in pg_waldump's .gitignore.

Disable one more set of tests from c8841199509.

Disable one set of tests from c8841199509.

Add isolation tests for the combination of EPQ and triggers.

Fix crash caused by EPQ happening with a before update trigger present.

Fix bitshiftright()'s zero-padding some more.