SELECT * FROM (sc_monitor) WHERE sc_monitor.delflg = 0 AND sc_monitor.effective = 0 AND sc_monitor.site_id = 1  AND sc_monitor.dtstart > '' AND sc_monitor.type < 2  ORDER BY sc_monitor.dtstart DESC LIMIT 1

SELECT * FROM (sc_monitor) WHERE sc_monitor.delflg = 0 AND sc_monitor.effective = 0 AND sc_monitor.site_id = 1  AND sc_monitor.dtstart > '' AND sc_monitor.type < 2  ORDER BY sc_monitor.dtstart DESC LIMIT 1
array(3) {
  [0]=>
  string(5) "HY000"
  [1]=>
  int(1525)
  [2]=>
  string(28) "Incorrect DATETIME value: ''"
}
string(268) "ＳＱＬ実行エラー
SELECT * FROM (sc_monitor) WHERE sc_monitor.delflg = 0 AND sc_monitor.effective = 0 AND sc_monitor.site_id = 1  AND sc_monitor.dtstart > '' AND sc_monitor.type < 2  ORDER BY sc_monitor.dtstart DESC LIMIT 1
0:1525: Incorrect DATETIME value: ''
"
NULL