mysql - Webmin - 带有变量的自定义 sql 命令

Question

我正在尝试在 webmin 中添加自定义命令，但收到以下错误消息：

execution error : called with 1 bind variables when 0 are needed

变量名是 startdate ，所以我在我的 sql 命令中尝试了以下内容：

BETWEEN '$startdate 00:00:00' AND '$enddate 23:59:59'
BETWEEN '? 00:00:00' AND  '? 23:59:59'
BETWEEN ':1 00:00:00' AND  ':2 23:59:59'
BETWEEN ? '00:00:00' AND ? '23:59:59'
BETWEEN ? AND ?

并用引号将其括起来，但没有一个替换为所需的变量。

完整的命令在这里

SELECT
  calldate,
  MAX(concurrent)+1 AS peakcount
FROM (
    SELECT
      DATE(a.calldate) as calldate,
      COUNT(b.uniqueid) AS concurrent
    FROM cdr AS a, cdr AS b
    WHERE  
      a.calldate BETWEEN '2013-11-08 00:00:00' AND '2013-11-13 23:59:59'
      AND (
        (a.calldate<=b.calldate AND (UNIX_TIMESTAMP(a.calldate)+a.duration)>=UNIX_TIMESTAMP(b.calldate))
        OR (b.calldate<=a.calldate AND (UNIX_TIMESTAMP(b.calldate)+b.duration)>=UNIX_TIMESTAMP(a.calldate))
      )
      AND a.uniqueid>b.uniqueid
    GROUP BY a.uniqueid
  ) AS baseview
GROUP BY calldate

有什么想法我还能尝试吗？