<p>您的数据帧名似乎有空值<code>Null</code>。以下是一些可供尝试的选项:</p>
<pre><code>df = sqlContext.createDataFrame([[1,'Navee','Srikanth'], [2,'','Srikanth'] , [3,'Naveen','']], ['ID','FirstName','LastName'])
df.show()
+---+---------+--------+
| ID|FirstName|LastName|
+---+---------+--------+
| 1| Navee|Srikanth|
| 2| |Srikanth|
| 3| Naveen| |
+---+---------+--------+
df.where(df.FirstName.isNotNull()).show() #This doen't remove null because df have empty value
+---+---------+--------+
| ID|FirstName|LastName|
+---+---------+--------+
| 1| Navee|Srikanth|
| 2| |Srikanth|
| 3| Naveen| |
+---+---------+--------+
df.where(df.FirstName != '').show()
+---+---------+--------+
| ID|FirstName|LastName|
+---+---------+--------+
| 1| Navee|Srikanth|
| 3| Naveen| |
+---+---------+--------+
df.filter(df.FirstName != '').show()
+---+---------+--------+
| ID|FirstName|LastName|
+---+---------+--------+
| 1| Navee|Srikanth|
| 3| Naveen| |
+---+---------+--------+
df.where("FirstName != ''").show()
+---+---------+--------+
| ID|FirstName|LastName|
+---+---------+--------+
| 1| Navee|Srikanth|
| 3| Naveen| |
+---+---------+--------+
</code></pre>