schema.sql: improve unique index

Most of the time, we'll query depstate by source. Thus it should come
first in the uniqueness constraint.

1 files changed, 1 insertions, 1 deletions

diff --git a/schema.sql b/schema.sql
index 9a19739..a17d1f7 100644
--- a/schema.sql
+++ b/schema.sql
@@ -4,7 +4,7 @@ CREATE TABLE depstate (
 	architecture TEXT NOT NULL,
 	satisfiable BOOLEAN NOT NULL CHECK (satisfiable in (0, 1)),
 	reason TEXT,
-	UNIQUE (architecture, source, version));
+	UNIQUE (source, architecture, version));
 
 CREATE TABLE depcheck (
 	architecture TEXT NOT NULL UNIQUE,