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我需要使用 if 语句来设置日期startDateFrom，startDateTo如果未在selectedStartDateFromandselectedStartDateTo变量中指定。

然后，我想使用startDateFromand过滤带有between和startDateTo的条目。Experiment_Instance_Start_DatestartDateFromstartDateTo

日期比较工作正常，只有当我添加 if 语句时它才会停止工作。有什么想法我在这里做错了吗？

| eval compare=strptime(Experiment_Instance_Start_Date,"%m/%d/%Y") 
| where compare>=strptime(startDateFrom,"%m/%d/%Y")
| eval compare=strptime(startDateTo,"%m/%d/%Y")
| where compare>=strptime(Experiment_Instance_Start_Date,"%m/%d/%Y")
| eval startDateFrom=if("$selectedStartDateFrom$"="", "01/01/1970", "$selectedStartDateFrom$")
| eval startDateTo=if("$selectedStartDateTo$"="", "01/01/2100", "$selectedStartDateTo$")
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1 回答 1

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Turns out "$selectedStartDateFrom$"="" is wrong, so I changed that to len("$selectedStartDateFrom$")>0. I also needed to move the if statements to before the date comparison for the startDateFrom and startDateTo to be available. Also start date of 01/01/1970 returns no results, so I changed it to a later date.

| eval startDateFrom=if(len("$selectedStartDateFrom$")>0, "$selectedStartDateFrom$", "01/01/2000")
| eval startDateTo=if(len("$selectedStartDateTo$")>0, "$selectedStartDateTo$", "01/01/2099")
| eval compare=strptime(Experiment_Instance_Start_Date,"%m/%d/%Y") 
| where compare>=strptime(startDateFrom,"%m/%d/%Y")
| eval compare=strptime(startDateTo,"%m/%d/%Y")
| where compare>=strptime(Experiment_Instance_Start_Date,"%m/%d/%Y")
于 2013-08-30T10:46:53.933 回答