Make wcf1_tag_to_object's PRIMARY KEY a UNIQUE KEY

see #3803

diff --git a/wcfsetup/setup/db/install.sql b/wcfsetup/setup/db/install.sql
index a30a0a25784844c56059bf074390c962bacc0a59..16f4a169d998724c1d59f96a8c9abfdbd9af5946 100644 (file)
--- a/wcfsetup/setup/db/install.sql
+++ b/wcfsetup/setup/db/install.sql
@@ -1349,7 +1349,7 @@ CREATE TABLE wcf1_tag_to_object (
        tagID INT(10) NOT NULL,
        objectTypeID INT(10) NOT NULL,
        languageID INT(10) NOT NULL,
-       UNIQUE KEY (objectTypeID, objectID, tagID),
+       PRIMARY KEY (objectTypeID, objectID, tagID),
        KEY (objectTypeID, tagID),
        KEY (tagID)
 );