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explain.c

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    • Tom Lane's avatar
      336a6491
      Improve my initial, rather hacky implementation of joins to append · 336a6491
      Tom Lane authored
      relations: fix the executor so that we can have an Append plan on the
      inside of a nestloop and still pass down outer index keys to index scans
      within the Append, then generate such plans as if they were regular
      inner indexscans.  This avoids the need to evaluate the outer relation
      multiple times.
      336a6491
      History
      Improve my initial, rather hacky implementation of joins to append
      Tom Lane authored
      relations: fix the executor so that we can have an Append plan on the
      inside of a nestloop and still pass down outer index keys to index scans
      within the Append, then generate such plans as if they were regular
      inner indexscans.  This avoids the need to evaluate the outer relation
      multiple times.