From 6b7f34812561d23393042c8d2e084f3e47e4371f Mon Sep 17 00:00:00 2001
From: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Date: Tue, 19 Oct 2021 11:08:29 +0200
Subject: [PATCH] Bug 29204: Fix reports/issues_stats.pl for MySQL 8
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Error was: Incorrect DATETIME value: ''

Test plan
Go to Reports -> Circulation
On Period select "Row" or "Column" and choose a date
Submit

Signed-off-by: Joonas Kylmälä <joonas.kylmala@iki.fi>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 9a4b7b1948ecba51c942bdbb6b202981a6cce144)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
---
 reports/issues_stats.pl | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/reports/issues_stats.pl b/reports/issues_stats.pl
index 8f86fdb113..fd528575e0 100755
--- a/reports/issues_stats.pl
+++ b/reports/issues_stats.pl
@@ -319,7 +319,8 @@ sub calculate {
           ( $linesource eq 'items' )
           ? " LEFT JOIN items ON (statistics.itemnumber = items.itemnumber) "
           : " LEFT JOIN borrowers ON (statistics.borrowernumber = borrowers.borrowernumber) ";
-        $strsth .= " WHERE $line is not null AND $line != '' ";
+        $strsth .= " WHERE $line IS NOT NULL ";
+        $strsth .= " AND $line != '' " if $line ne "datetime";
     }
 
     if ( $line =~ /datetime/ ) {
@@ -408,7 +409,8 @@ sub calculate {
           ( $colsource eq 'items' )
           ? "LEFT JOIN items ON (statistics.itemnumber = items.itemnumber) "
           : "LEFT JOIN borrowers ON (statistics.borrowernumber = borrowers.borrowernumber) ";
-        $strsth2 .= " WHERE $column IS NOT NULL AND $column != '' ";
+        $strsth .= " WHERE $column IS NOT NULL";
+        $strsth .= " AND $column != '' " if $column ne "datetime";
     }
 
     if ( $column =~ /datetime/ ) {
-- 
2.39.5