From 9e6f522be4a7426af1bc7cad74d6558860fd3e0a Mon Sep 17 00:00:00 2001
From: akvlad <akvlad90@gmail.com>
Date: Thu, 3 Apr 2025 22:56:40 +0300
Subject: [PATCH] debut order_by field index calculation

---
 chsql/src/parquet_ordered_scan.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/chsql/src/parquet_ordered_scan.cpp b/chsql/src/parquet_ordered_scan.cpp
index 65c3402..e41117b 100644
--- a/chsql/src/parquet_ordered_scan.cpp
+++ b/chsql/src/parquet_ordered_scan.cpp
@@ -48,7 +48,9 @@ namespace duckdb {
             if (order_by_column_it == reader->metadata->metadata->schema.end()) {
 	            orderByIdx = -1;
             } else {
-                orderByIdx = order_by_column_it - reader->metadata->metadata->schema.begin() - 1;
+                orderByIdx = find_if(columnMap.begin(), columnMap.end(),
+                	[&](const int64_t& i) { return i == (order_by_column_it - reader->metadata->metadata->schema.begin() - 1); }) -
+            	 columnMap.begin();
             }
 		}
 		void Scan(ClientContext& ctx) {