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postgres_fdw.h

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    • Robert Haas's avatar
      e4106b25
      postgres_fdw: Push down joins to remote servers. · e4106b25
      Robert Haas authored
      If we've got a relatively straightforward join between two tables,
      this pushes that join down to the remote server instead of fetching
      the rows for each table and performing the join locally.  Some cases
      are not handled yet, such as SEMI and ANTI joins.  Also, we don't
      yet attempt to create presorted join paths or parameterized join
      paths even though these options do get tried for a base relation
      scan.  Nevertheless, this seems likely to be a very significant win
      in many practical cases.
      
      Shigeru Hanada and Ashutosh Bapat, reviewed by Robert Haas, with
      additional review at various points by Tom Lane, Etsuro Fujita,
      KaiGai Kohei, and Jeevan Chalke.
      e4106b25
      History
      postgres_fdw: Push down joins to remote servers.
      Robert Haas authored
      If we've got a relatively straightforward join between two tables,
      this pushes that join down to the remote server instead of fetching
      the rows for each table and performing the join locally.  Some cases
      are not handled yet, such as SEMI and ANTI joins.  Also, we don't
      yet attempt to create presorted join paths or parameterized join
      paths even though these options do get tried for a base relation
      scan.  Nevertheless, this seems likely to be a very significant win
      in many practical cases.
      
      Shigeru Hanada and Ashutosh Bapat, reviewed by Robert Haas, with
      additional review at various points by Tom Lane, Etsuro Fujita,
      KaiGai Kohei, and Jeevan Chalke.