当针对某些查询执行 Explain extended 时，Mysql 服务器将关闭

Question

我在 MySQL 服务器中遇到了一个非常奇怪的问题

当我执行例如：

EXPLAIN EXTENDED SELECT PRODNO,
          DT,
          FLAG1,
          FLAG2,
          `ORDER`,
          `QUANTITY`,
          `CARRYOVER`,
          `RETURNS`,
          `QUANTITY` + `CARRYOVER` - `RETURNS` AS `TOTALMARKET`
   FROM   (SELECT  NAME_CONST('_DATE',_binary'2011-02-20' COLLATE 'binary') AS wdt
             UNION ALL
             SELECT DATE(DATE_SUB( NAME_CONST('_DATE',_binary'2011-02-20' COLLATE 'binary'), INTERVAL 1 WEEK )) AS wdt
             UNION ALL
             SELECT DATE(DATE_SUB( NAME_CONST('_DATE',_binary'2011-02-20' COLLATE 'binary'), INTERVAL 2 WEEK )) AS wdt
             UNION ALL
             SELECT DATE(DATE_SUB( NAME_CONST('_DATE',_binary'2011-02-20' COLLATE 'binary'), INTERVAL 3 WEEK )) AS wdt
             UNION ALL
             SELECT DATE(DATE_SUB( NAME_CONST('_DATE',_binary'2011-02-20' COLLATE 'binary'), INTERVAL 4 WEEK )) AS wdt
             ) days
          JOIN bbproduct b
            ON b.dt = days.wdt
   WHERE  ROUTENO =  NAME_CONST('_ROUTENO',3)
   ORDER  BY DT DESC,
             PRODNO ASC

服务器版本：5.1.31-community

这只会关闭 MySQL 服务器。可能出了什么问题？

Answer 1

问题就出在那些COLLATE 'binary'东西上。