Remove default from backend columns

https://dev.mysql.com/doc/refman/8.0/en/blob.html
BLOB and TEXT columns cannot have DEFAULT values.

diff --git a/config/dbstructure.config.php b/config/dbstructure.config.php
index 70be49481991560f20d03cb1fb7af89f44e94b1a..0c24d8a737cae6d9ad03fedac6dfa95210d58215 100644 (file)
--- a/config/dbstructure.config.php
+++ b/config/dbstructure.config.php
@@ -955,8 +955,8 @@ return [
                        "allow_gid" => ["type" => "mediumtext", "comment" => "Access Control - list of allowed groups"],
                        "deny_cid" => ["type" => "mediumtext", "comment" => "Access Control - list of denied contact.id"],
                        "deny_gid" => ["type" => "mediumtext", "comment" => "Access Control - list of denied groups"],
-                       "backend-class" => ["type" => "tinytext", "default" => "", "comment" => "Storage backend class"],
-                       "backend-ref" => ["type" => "text", "default" => "", "comment" => "Storage backend data reference"]
+                       "backend-class" => ["type" => "tinytext", "comment" => "Storage backend class"],
+                       "backend-ref" => ["type" => "text", "comment" => "Storage backend data reference"]
                ],
                "indexes" => [
                        "PRIMARY" => ["id"],