轉換的IPv4字符串的BIGINT表示火花SQL

Question

我如何使用SPARK SQL（hiveish）轉換爲IPv4的IP地址從字符串轉換爲長表示

Answer 1

這可以用乘法來完成：

sqlContext.sql("""SELECT 
     (cast(split(l.klientip,'\\.')[0] as bigint) * 16777216) 
    + (cast(split(l.klientip,'\\.')[1] as bigint) * 65536) 
    + (cast(split(l.klientip,'\\.')[2] as bigint) * 256) 
    + (cast(split(l.klientip,'\\.')[3] as bigint)) ip_add_int 
    from loggik l 
    """).show() 

或與偏移（與乘法相同）

sqlContext.sql("""SELECT 
     (shiftLeft(cast(split(l.klientip,'\\.')[0] as bigint),24) 
     +shiftLeft(cast(split(l.klientip,'\\.')[1] as bigint),16) 
     +shiftLeft(cast(split(l.klientip,'\\.')[2] as bigint),8) 
     +cast(split(l.klientip,'\\.')[3] as bigint)) ip_shift_int 
    from loggik l 
    """).show()