From ed38e6026494a2b58c70cc175c6e210bea454e5c Mon Sep 17 00:00:00 2001
From: Jelmer Vernooij <jelmer@samba.org>
Date: Mon, 17 Jan 2005 14:25:58 +0000
Subject: [PATCH] r4802: Don't try to update a column with the name "NULL"

---
 source/passdb/pdb_sql.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/source/passdb/pdb_sql.c b/source/passdb/pdb_sql.c
index 820280bcbf6..ee9ece2baf0 100644
--- a/source/passdb/pdb_sql.c
+++ b/source/passdb/pdb_sql.c
@@ -141,8 +141,14 @@ static const char * config_value_write(const char *location, const char *name, c
 	swrite = strrchr(v, ':');
 
 	/* Default to the same field as read field */
-	if (!swrite)
+	if (!swrite) {
+
+		/* Updating NULL does not make much sense */
+		if (!strcmp(v, "NULL")) 
+			return NULL;
+
 		return v;
+	}
 
 	swrite++;
 
-- 
2.47.3