项目中SET @rowNum = 0和SELECT语句一起执行

原文：https://blog.csdn.net/Beyond737/article/details/109400582

1 SET @rowNum = 0;
2 SELECT
3     ( @rowNum := @rowNum + 1 ) AS rowNo,
4     t.phone,
5     t.count 
6 FROM
7     ( SELECT phone, count( 1 ) AS count FROM sign_in  GROUP BY phone ORDER BY count DESC LIMIT 10 ) t;

方法一：合并成一条语句

1 SELECT
2     ( @rowNum := @rowNum + 1 ) AS rowNo,
3     t.phone,
4     t.count 
5 FROM 
6     (SELECT @rowNum := 0) tmp,
7     ( SELECT phone, count( 1 ) AS count FROM sign_in  GROUP BY phone ORDER BY count DESC LIMIT 10 ) t;

方法二：mysql数据源url配置追加

&allowMultiQueries=true

原文地址：https://www.cnblogs.com/xiluhua/p/15541410.html