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-rw-r--r--modules/system/system.install2
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/system/system.install b/modules/system/system.install
index 7f7c25c91..23867ce73 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -718,7 +718,7 @@ function system_install() {
db_query("CREATE INDEX {node_comment_statistics}_node_comment_timestamp_idx ON {node_comment_statistics} (last_comment_timestamp)");
db_query("CREATE TABLE {files} (
- fid int_unsigned NOT NULL default 0,
+ fid serial CHECK (fid >= 0),
nid int_unsigned NOT NULL default 0,
filename varchar(255) NOT NULL default '',
filepath varchar(255) NOT NULL default '',