错误1052：列＆＃39; metric_name＆＃39;在where子句中含糊不清

Question

SELECT b.target_host                              AS 'host',
       a.target_ip                                AS 'Target',
       a.monitor_type                             AS 'Type Monitor',
       Concat (a.metric_name, "", a.metric_value) AS "metric name value"
FROM   pm_sis_raw_metrics AS a
       INNER JOIN pm_sis_hs_metrics AS b
               ON a.id = b.id
WHERE  metric_value > 80
       AND ( metric_name = "utilization"
              OR metric_name = "physical memory used %"
              OR metric_name = "disk/file system/[c]/percent full"
              OR metric_name = "% packets good" )  

  

错误1052：列＆＃39; metric_name＆＃39; in where子句不明确

Answer 1

你必须在where where中指定具有列名的表别名，如a.metric_name。