From 2f854cce4a8f12ddeee46c3fdd1e12db1bc559be Mon Sep 17 00:00:00 2001
From: Anthony Dresser <andresse@microsoft.com>
Date: Fri, 16 Mar 2018 19:52:49 -0700
Subject: [PATCH] correctly detect undefined for input strings during copy
 (#906)

---
 src/sql/parts/query/execution/queryRunner.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sql/parts/query/execution/queryRunner.ts b/src/sql/parts/query/execution/queryRunner.ts
index 6c5a1291e9..afebd83836 100644
--- a/src/sql/parts/query/execution/queryRunner.ts
+++ b/src/sql/parts/query/execution/queryRunner.ts
@@ -483,7 +483,7 @@ export default class QueryRunner {
 		// Windows(CRLF): \r\n
 		// Linux(LF)/Modern MacOS: \n
 		// Old MacOs: \r
-		if (!inputString) {
+		if (types.isUndefinedOrNull(inputString)) {
 			return 'null';
 		}