From 82f082743cd53398957310498596f37d8d5f5aac Mon Sep 17 00:00:00 2001
From: Urban Müller
Date: Mon, 10 Feb 2020 12:42:11 +0100
Subject: return 0 for no modified records if query was optimized away

---
 it_dbi.class | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/it_dbi.class b/it_dbi.class
index 45a321d..633974e 100644
--- a/it_dbi.class
+++ b/it_dbi.class
@@ -514,7 +514,7 @@ function clear($pp = true)
 /**
  * Semi-internal: send a raw SQL query and return mysql result value
  * @param $query complete SQL query string
- * @return raw MySQL result. May die if query fails and safety is big enough
+ * @return MySQL result which is false for errors. May die on error if safety is big enough
  */
 function query($query, $p = array())
 {
@@ -805,13 +805,13 @@ function store($tags = array())
  * Update current record or a number of records given by where condition
  * @param $tags key => value pairs (these have priority over changes in member vars)
  * @param $where condition to select records to be modified (if not current record)
- * @return number of updated records (or false on error). WARNING: read LIMIT docs before using it
+ * @return number of modified records (or false on error). WARNING: read LIMIT docs before using it
  * Does not destroy internal state of last select() call
  */
 function update($tags = array(), $where = null)
 {
 	$this->_connect();
-	$result = true;
+	$result = 0; # in case we optimize away the query
 
 	/* Pre-processing, $tags is passed by reference and may be modified here */
 	$this->_write_pre_process($tags, 'UPDATE');
-- 
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