When we use SQL-level cursor with foreign tables of pgsql_fdw, CLOSE statement crashes backend.
Fixed pgsql_fdw to use per-transaction context for tuplestore, which has enough lifetime for cursor access.
relative commit: ee6549643ace2bddf4514feec9d20143e539bce8
Fixed pgsql_fdw to use per-transaction context for tuplestore, which has enough lifetime for cursor access.
relative commit: ee6549643ace2bddf4514feec9d20143e539bce8