Blanks in the SharePoint "Top Queries by Day" search report

Question

Whenever I pull a "Top Queries by Day" report from my SharePoint site, I am seeing a record with Query Text blank but I don't know why and from where these blank query texts are getting logged into the search log. Is there any way I can prevent blanks in the search report? See below screen:

Update: I am using SharePoint 2013 Enterprise On Prem.

Answer 1

Please check the similar issue in Msdn

SharePoint 2013 search analytics reports - 'query text' column value is empty in 'top queries by month' report

1.Run the script to start the timer job:

$ua = Get-SPTimerJob -Type Microsoft.Office.Server.Search.Analytics.UsageAnalyticsJobDefinition
$ua.GetAnalysisInfo()

$ua = get-sptimerjob -type microsoft.office.server.search.analytics.usageanalyticsjobdefinition
$ua.DisableTimerJobSchedule()
$ua.StartAnalysis()
$ua.EnableTimerJobSchedule()

$ua = Get-SPTimerJob -Identity ("job-usage-log-file-import")
$ua.RunNow()

2. Please install the SharePoint 2013 March update if our version is before this: SharePoint 2013 March update:

http://support.microsoft.com/kb/2767999