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IP,Name,Port,Coding,Type,TotalInitCount
"10.44.161.194","297504M5616-109","0_1_0",\N,"interleavedOnly",\N
……
val df = spark.read.option("header", true).format("csv").csv("/tmp/data.csv")
df.createOrReplaceTempView("testtbl")
scala> spark.sql("select * from testtbl where TotalInitCount='\\N'").show()