我正在努力实现我在下面描述的内容,我希望有人可以提供帮助。
我在Teradata中有一个如下所示的数据集。
我需要设置一个标志来识别过去呼叫,挂断,然后在三天内再次呼叫的呼叫(忽略匿名),如下所示。
这是逻辑:
以下是相同的数据:
SESS_KEY PHONE_NUMBER CALL_DATETIME PRIOR_OUTCOME SELF_SERV
CEC8FC08-FB74-4C22-49A2-38515697C540 3109911531 7/13/2016 15:01:31 TRANSFER N
863125E8-B1CD-42DA-C3A0-6123D5553FF1 3123716274 7/8/2016 17:48:9 CALLER_HUNG_UP N
ED090710-1A7A-4903-E7B8-2C8095F9BE9F 3123716274 7/8/2016 17:50:26 TRANSFER N
00917937-D5C2-4170-CD92-C888F4EB9138 3126221129 7/14/2016 11:37:39 TRANSFER N
BB052CFB-4221-49D3-38AD-6D9DA977AE4B 3133733000 7/20/2016 9:51:36 CALLER_HUNG_UP N
A70F0C35-10A1-415C-1FBE-656AF451F674 3133733000 7/20/2016 9:57:32 TRANSFER ?
DE0D195B-664B-4EF6-63A6-98C2D45B96D0 3133733000 7/26/2016 9:01:26 TRANSFER N
07979610-0F60-4581-DD9E-38174E03E6AD 5152481040 7/19/2016 18:13:51 CALLER_HUNG_UP N
8837EDAF-FBFB-4115-80B3-B4A035863CDB 5152481040 7/22/2016 13:29:24 TRANSFER N
4FFBC4DE-317C-4472-0186-1E348CD837D7 5152706814 7/6/2016 12:47:2 TRANSFER Y
EB2572A7-BE96-48F1-6B86-B14FBFBAD10D 7702467089 7/5/2016 15:07:4 CALLER_HUNG_UP N
A7B3E35F-0A2A-453B-7A9A-716450D801AA 7702467089 7/5/2016 15:41:52 TRANSFER ?
E0E129F5-EAD2-40CA-0B97-6D9DBB1320D8 7702467089 7/6/2016 21:38:34 CALLER_HUNG_UP N
4635F54F-A5F3-4930-90A6-9DDC8ABA9AD4 7702467089 7/6/2016 23:54:6 CALLER_HUNG_UP ?
3C72BF2A-6C2D-4721-F9A2-EDB4F51E39F0 7702467089 7/10/2016 20:53:39 CALLER_HUNG_UP N
EAD8F235-A9CC-4958-9CB0-49D953140C08 7702467089 7/13/2016 17:52:3 CALLER_HUNG_UP N
C868D5AF-217D-424B-8DB5-9F3F3A0B2CD3 7702467089 7/14/2016 17:55:39 CALLER_HUNG_UP N
433CCDDF-0355-4AE4-5889-0FFC0680404F 7702467089 7/16/2016 19:55:8 TRANSFER ?
7FD6E57A-A5BA-445E-DF99-17A9716B7BE2 7702467089 7/17/2016 19:52:2 CALLER_HUNG_UP N
89FBB98F-DF55-4FFD-E0A8-6680C103A520 7702467089 7/20/2016 21:09:42 CALLER_HUNG_UP ?
3508DDD9-A7A7-4473-ECA8-88850AAF4934 anonymous 7/13/2016 9:05:19 CALLER_HUNG_UP N
990A15C4-B2F8-4335-E392-0B2FA1640F58 anonymous 7/13/2016 9:54:36 CALLER_HUNG_UP N
571428CB-32B2-4358-4EA2-F1B144B57890 anonymous 7/15/2016 3:19:56 TRANSFER Y
FF3EC14E-F7F2-4DE3-3697-0912E27F2AC0 anonymous 7/15/2016 8:28:39 CALLER_HUNG_UP N
7856FA05-F1EE-4173-C48F-9996AB5317C7 anonymous 7/17/2016 10:13:15 CALLER_HUNG_UP Y
829E7469-AD84-45AC-9E9C-9CA6C8BD336F anonymous 7/18/2016 10:45:53 TRANSFER N
感谢大家的帮助!
答案 0 :(得分:0)
您可以使用前面的行,沿着这些行:
select
phone_number,
call_datetime,
max(call_datetime)
over (partition by phone_number order by call_datetime rows between 1 preceding and 1 preceding) as prev_call
然后,您可以将之前的呼叫时间戳与当前呼叫时间戳进行比较。对于你的同一天:
case when cast(call_timestamp as date) = cast(prev_call as date) then 1 end as SAME_DAY