From 82bf69b4799e3087c0d99cded9d3569a7669f94c Mon Sep 17 00:00:00 2001
From: Andrew Kane <andrew@ankane.org>
Date: Thu, 29 Feb 2024 14:36:18 -0800
Subject: [PATCH] Fixed vector subtraction being marked as commutative - fixes
 #475

---
 sql/vector--0.6.0--0.6.1.sql | 8 ++++++++
 sql/vector.sql               | 3 +--
 2 files changed, 9 insertions(+), 2 deletions(-)
 create mode 100644 sql/vector--0.6.0--0.6.1.sql

diff --git a/sql/vector--0.6.0--0.6.1.sql b/sql/vector--0.6.0--0.6.1.sql
new file mode 100644
index 0000000..5081aae
--- /dev/null
+++ b/sql/vector--0.6.0--0.6.1.sql
@@ -0,0 +1,8 @@
+-- complain if script is sourced in psql, rather than via CREATE EXTENSION
+\echo Use "ALTER EXTENSION vector UPDATE TO '0.6.1'" to load this file. \quit
+
+DROP OPERATOR - (vector, vector);
+
+CREATE OPERATOR - (
+	LEFTARG = vector, RIGHTARG = vector, PROCEDURE = vector_sub
+);
diff --git a/sql/vector.sql b/sql/vector.sql
index 4b17faa..dedbce1 100644
--- a/sql/vector.sql
+++ b/sql/vector.sql
@@ -180,8 +180,7 @@ CREATE OPERATOR + (
 );
 
 CREATE OPERATOR - (
-	LEFTARG = vector, RIGHTARG = vector, PROCEDURE = vector_sub,
-	COMMUTATOR = -
+	LEFTARG = vector, RIGHTARG = vector, PROCEDURE = vector_sub
 );
 
 CREATE OPERATOR * (