以下是2个表RawDebug和CarrierDetails。在RawDebug中,如果DebugData是VER%,那么ActualDebugData是Verizon,如果DebugData是一个数字,首先我们必须用'替换其他字符,如(?,")。 ',然后我们必须查找CarrierDetails表以选择其网络,其中Mcc = substr(" 310410",0,3)和Mnc = substr(" 310410",4, 2)。然后将此网络填充到ActualDebugData。
表RawDebug:
HardwareId DebugData ActualDebugData
123 VER% Verizon
456 310410? Bell
Table CarrierDetails:
Mcc Mnc Network
310 410 Bell
我尝试过:
SELECT
HardwareId, DebugReason, DebugData,
CASE
WHEN lower(DebugData) LIKE 'ver%' THEN 'Verizon'
WHEN REGEXP_MATCH(DebugData,'\\d+') THEN c.Network
ELSE REGEXP_REPLACE(DebugData,'\\?',' ')
END
AS ActualDebugData
FROM (
SELECT
HardwareId, DebugReason, DebugData,
INTEGER(SUBSTR(DebugData,0,3)) AS d1, INTEGER(SUBSTR(REGEXP_REPLACE(DebugData,'^[a-zA-Z0-9]',' '),4,LENGTH(DebugData)-1)) as d2
FROM TABLE_DATE_RANGE([bigdata:RawDebug.T],TIMESTAMP('2016-05-15'),TIMESTAMP('2016-05-15'))
WHERE DebugReason = 50013
) AS d
LEFT JOIN (
SELECT
Network, Mcc, Mnc
FROM [bigdata:RawDebug.CarrierDetails]
) AS c
ON c.Mcc = d.d1 and c.Mnc = d.d2
LIMIT 400
答案 0 :(得分:2)
请记住 - 答案通常和问题一样好!
希望这会有所帮助,但看到你的问题的历史 - 这可能不是结束:o)
SELECT
HardwareId, DebugReason, DebugData,
CASE
WHEN LOWER(DebugData) LIKE 'ver%' THEN 'Verizon'
WHEN REGEXP_MATCH(DebugData,'\\d+') THEN c.Network
ELSE REGEXP_REPLACE(DebugData,'\\?',' ')
END AS ActualDebugData
FROM (
SELECT
HardwareId, DebugReason, DebugData,
INTEGER(SUBSTR (DebugData, 1, 3)) AS d1,
INTEGER(SUBSTR (DebugData, 4, 3)) AS d2
FROM //TABLE_DATE_RANGE([bigdata:RawDebug.T],TIMESTAMP('2016-05-15'),TIMESTAMP('2016-05-15'))
(SELECT 123 AS HardwareId, 'VER%' AS DebugData, 'Verizon' AS ActualDebugData, 50013 AS DebugReason), // sample data
(SELECT 456 AS HardwareId, '310410?' AS DebugData, 'Bell' AS ActualDebugData, 50013 AS DebugReason) // sample data
WHERE DebugReason = 50013
) AS d
LEFT JOIN (
SELECT
Network, Mcc, Mnc
FROM //[bigdata:RawDebug.CarrierDetails]
(SELECT 310 AS Mcc, 410 AS Mnc, 'Bell' AS Network) // sample data
) AS c
ON c.Mcc = d.d1 AND c.Mnc = d.d2
LIMIT 400
输出s:
HardwareId DebugReason DebugData ActualDebugData
123 50013 VER% Verizon
456 50013 310410? Bell