text: -- sqlitecaching insert or update into table
  INSERT INTO "a___cc"
  (
      -- timestamp
      __timestamp,
      -- all columns
      "a", -- key
      "c" -- value
  ) VALUES (
      -- timestamp
      ?,
      -- all values
      ?,
      ?
  ) ON CONFLICT (
      -- key columns
      "a" -- key
  ) DO UPDATE SET (
      -- value columns
      "c" -- value
  ) = (
      -- value values
      excluded."c" -- value
  )
  ;
  