启用druid的wall的时候，mysql的haveing子句报错?报错

@wenshao 你好，想跟你请教个问题：

这是jfinal中启用druid的wall的时候，这个语句就会报错，关掉wall就没问题，请问下是druid的bug么

Caused by: java.sql.SQLException: sql injection violation : select count(*)  FROM (SELECT P1.POST_ID, P1.POST_CONTENT,P1.IS_ANONYMOUS,P1.USER_ID,P1.EMAIL,P1.POST_STATE,P1.POST_DATE,P1.POST_UPDATE_DATE,P1.STAFF_ID,U.USER_NAME,U.INDIV_NAME,U.DISPLAY_PICTURE FROM post P1 LEFT JOIN user_info U ON P1.USER_ID=U.USER_ID HAVING P1.POST_STATE = ?) P
at com.alibaba.druid.wall.WallFilter.check(WallFilter.java:311)
at com.alibaba.druid.wall.WallFilter.connection_prepareStatement(WallFilter.java:169)
at com.alibaba.druid.filter.FilterChainImpl.connection_prepareStatement(FilterChainImpl.java:446)
at com.alibaba.druid.filter.FilterAdapter.connection_prepareStatement(FilterAdapter.java:911)
at com.alibaba.druid.filter.FilterEventAdapter.connection_prepareStatement(FilterEventAdapter.java:122)
at com.alibaba.druid.filter.FilterChainImpl.connection_prepareStatement(FilterChainImpl.java:446)
at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.prepareStatement(ConnectionProxyImpl.java:342)
at com.alibaba.druid.pool.DruidPooledConnection.prepareStatement(DruidPooledConnection.java:312)
at com.jfinal.plugin.activerecord.Db.query(Db.java:39)
at com.jfinal.plugin.activerecord.Model.paginate(Model.java:217)
... 26 more
Caused by: com.alibaba.druid.sql.parser.SQLParseException: syntax error, expect RPAREN, actual HAVING HAVING
at com.alibaba.druid.sql.parser.SQLParser.accept(SQLParser.java:125)
at com.alibaba.druid.sql.parser.SQLSelectParser.parseTableSource(SQLSelectParser.java:291)
at com.alibaba.druid.sql.parser.SQLSelectParser.parseFrom(SQLSelectParser.java:282)
at com.alibaba.druid.sql.dialect.mysql.parser.MySqlSelectParser.query(MySqlSelectParser.java:182)
at com.alibaba.druid.sql.parser.SQLSelectParser.select(SQLSelectParser.java:59)
at com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser.parseSelect(MySqlStatementParser.java:184)
at com.alibaba.druid.sql.parser.SQLStatementParser.parseStatementList(SQLStatementParser.java:86)
at com.alibaba.druid.wall.WallProvider.check(WallProvider.java:139)
at com.alibaba.druid.wall.WallFilter.check(WallFilter.java:298)
... 35 more