Question

我正在处理这些查询，但每次运行它都会显示错误

＃1054 - 未知栏＆＃39; gen_cityname＆＃39;在＆＃39; where子句＆＃39;虽然列中有列

SET @rownum := 0;
SELECT bgycode, scc_bgyscoretotal 
        FROM (
                SELECT @rownum := @rownum + 1 AS bgycode, 
                    scc_bgyscoretotal,id
                FROM bgyprofile
                  ORDER BY scc_bgyscoretotal DESC
                ) as result 
         WHERE gen_cityname=XXXXXX;

Answer 1

列gen_cityname在where子句中使用但在结果表中找不到。在select中输入gen_cityname，如下所示。

 SELECT @rownum := @rownum + 1 AS bgycode, 
                scc_bgyscoretotal,
                 id,
                 gen_cityname
            FROM bgyprofile
              ORDER BY scc_bgyscoretotal DESC

列不存在，即使它存在于数据库中

1 个答案: