From b774973852d876d0f659353c462aafdb0663391b Mon Sep 17 00:00:00 2001
From: Colin Dellow <cldellow@gmail.com>
Date: Sun, 24 Jun 2018 14:51:54 -0400
Subject: [PATCH] Avoid row filter check when no constraints

The function call overhead is expensive!

This makes count(*) on the census data 175ms instead
of 225ms, while not significantly impacting other use cases.
---
 parquet/parquet_cursor.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/parquet/parquet_cursor.cc b/parquet/parquet_cursor.cc
index f4912ba..4a93b5b 100644
--- a/parquet/parquet_cursor.cc
+++ b/parquet/parquet_cursor.cc
@@ -706,7 +706,7 @@ start:
 
   rowsLeftInRowGroup--;
   rowId++;
-  if(!currentRowSatisfiesFilter())
+  if(constraints.size() > 0 && !currentRowSatisfiesFilter())
     goto start;
 }