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   1 # void pq\Cursor::fetchAsync([string $spec = "1"[, callable $callback = NULL]])
   2
   3 [Asynchronously](pq/Connection/: Asynchronous Usage) fetch rows from the cursor.
   4 See pq\Cursor::fetch().
   5
   6 ## Params:
   7
   8 * Optional string $spec = "1"
   9   What to fetch.
  10 * Optional callable $callback as function(pq\Result $res)
  11   A callback to execute when the result is ready.
  12
  13 ## Throws:
  14
  15 * pq\Exception\InvalidArgumentException
  16 * pq\Exception\BadMethodCallException
  17 * pq\Exception\RuntimeException