Question on Sort node's actual rows

[Victor Yegorov <vyegorov@xxxxxxxxx>]

Greetings.

I'm looking at a plan: http://explain.depesz.com/s/sPv

And I have a question. Why in the following snippet `Sort` node reports 128818 rows, although

child node returned only 352?

"->  Sort  (cost=37.06..37.94 rows=352 width=20) (actual time=4.441..16.971 rows=128818 loops=1)

"      Sort Key: ts.currency

"      Sort Method: quicksort  Memory: 52kB

"      Buffers: shared hit=13

"      ->  Seq Scan on transaction_slip ts  (cost=0.00..22.18 rows=352 width=20) (actual time=0.041..4.035 rows=352 loops=1)

"            Filter: (account_id = 101)

"            Rows Removed by Filter: 382

"            Buffers: shared hit=13

This is:

PostgreSQL 9.3.1 on x86_64-apple-darwin12.5.0, compiled by i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00), 64-bit

--
Victor Y. Yegorov