如何統一的日期時間格式時的Varchar

Question

我想我的正常化日期時間對於一個給定的數據庫。我需要能夠使用日期做統計。以下是我迄今所做的：

select 
CASE PATINDEX('%[0-9]/[0-9]/[0-9][0-9][0-9][0-9] [0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
    WHEN 1 then 'Pattern1'--CAST([Last Updated] AS Datetime) --2/8/2017 2:30:14 PM 
    ELSE 
    CASE PATINDEX('%[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
     WHEN 1 then 'Pattern2' --2015-03-02 03:46:38 PM 
     ELSE 
     CASE PATINDEX('%[0-9][0-9]/[0-9][0-9]/[0-9][0-9][0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
      WHEN 1 THEN 'Pattern3' 
      ELSE 
      CASE PATINDEX('%[0-9]/[0-9][0-9]/[0-9][0-9][0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
       WHEN 1 THEN 'Pattern4' 
       ELSE 
       CASE PATINDEX('%[0-9]/[0-9][0-9]/[0-9][0-9][0-9][0-9] [0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
        WHEN 1 THEN 'Pattern5' 
        ELSE 
        CASE PATINDEX('%[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9] [0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
         WHEN 1 THEN 'Pattern6' 
         ELSE 
         CASE PATINDEX('%[0-9][0-9]/[0-9][0-9]/[0-9][0-9][0-9][0-9] [0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
          WHEN 1 THEN 'Pattern7' 
          ELSE 
          CASE PATINDEX('%[0-9]/[0-9]/[0-9][0-9][0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
           WHEN 1 THEN 'Pattern8' 
           ELSE 
           CASE PATINDEX('%[0-9][0-9]/[0-9]/[0-9][0-9][0-9][0-9] [0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
            WHEN 1 THEN 'Pattern9' 
            ELSE 
            CASE PATINDEX('%[0-9][0-9]/[0-9]/[0-9][0-9][0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]%',[Last Updated]) 
             WHEN 1 THEN 'Pattern10' 






END 
    END 
     END 
      END 
       END 
        END 
         END 
          END 
           END 
            END 
as 'Pattern' 

當我試圖強制轉換爲日期時間，它給了我一個錯誤...下面是一些例子：

Pattern1: 
2/8/2017 8:06:56 AM 
2/2/2017 2:42:09 PM 
1/3/2017 9:10:20 AM 

Pattern 2: 
2016-12-20 11:08:20 
2016-11-09 10:04:35 
2016-11-01 10:53:11 AM 
2017-02-03 09:13:14 
2016-11-09 10:09:09 

Pattern3: 
12/14/2016 11:54:53 AM 
12/16/2016 11:05:24 AM 
12/19/2016 12:23:51 PM 

Pattern4: 
8/15/2016 12:13:35 PM 
4/17/2015 12:29:54 PM 
2/22/2016 10:44:11 AM 
6/12/2014 10:08:07 AM 
9/16/2013 12:18:22 PM 

我想他們所有進行標準化的格式：'02 /二千零一十七分之十三11時58分零零秒'

是否有這樣做的任何方式？

這是我如何做才能日期：

WHEN (SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22)) = null THEN 'UNAVAILABLE' 
WHEN (SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22)) = '' THEN 'UNAVAILABLE' 
WHEN (SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22)) like '%--%' 
THEN 'UNAVAILABLE' 

ELSE 

    (Case 
    WHEN SUBSTRING(REVERSE((RTRIM(LTRIM((SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22)))))),0,5) 
    --FOR AM 
    LIKE '%MA%' THEN 
    SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22) 

    WHEN SUBSTRING(REVERSE((RTRIM(LTRIM((SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22)))))),0,5) 
    --FOR PM 
    LIKE '%MP%' THEN 
    SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22) 

    ELSE 

     (CASE 
     WHEN LEN(RTRIM(LTRIM((SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22))))) <20 
     THEN 'UNAVAILABLE' 


     ELSE 

      LEFT(RTRIM(LTRIM((SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22)))), 
      LEN(RTRIM(LTRIM((SUBSTRING(SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100),PATINDEX('%[0-9]%',SUBSTRING(Cast(Resolution as varchar(8000)),LEN(/**/Cast(Resolution as varchar(8000))/**/) - CHARINDEX('---------------------------------------------',REVERSE(/**/Cast(Resolution as varchar(8000))/**/)),100)),22)))))-2) 


      END) 

     END) 

END) 

as 'Last Updated' 

這是從日誌系統。由於這些信息是自信的，我無法提供很多信息。但請注意，有很多人在評論末尾添加時間戳，其中包括他們的姓名和時間戳。隨着查詢在那裏，我能夠獲得大部分日期。有時候沒有辦法獲得日期（日誌中根本沒有timetamp）。這裏是我可以給的例子：

Test Data 
--------------------------------------------- 
FName LName 2/13/2017 1:19:42 PM 

Answer 1

我認爲你的問題有一個更簡單的解決方案。這是一個命題：

SELECT CONVERT(datetime, any_datetime_format) unified_datetime 
from 
(
    SELECT '2/8/2017 8:06:56 AM' any_datetime_format UNION 
    SELECT '2/2/2017 2:42:09 PM' any_datetime_format UNION 
    SELECT '1/3/2017 9:10:20 AM' any_datetime_format UNION 
    SELECT '2016-12-20 11:08:20' any_datetime_format UNION 
    SELECT '2016-11-09 10:04:35' any_datetime_format UNION 
    SELECT '2016-11-01 10:53:11 AM' any_datetime_format UNION 
    SELECT '2017-02-03 09:13:14' any_datetime_format UNION 
    SELECT '2016-11-09 10:09:09' any_datetime_format UNION 
    SELECT '12/14/2016 11:54:53 AM' any_datetime_format UNION 
    SELECT '12/16/2016 11:05:24 AM' any_datetime_format UNION 
    SELECT '12/19/2016 12:23:51 PM' any_datetime_format UNION 
    SELECT '8/15/2016 12:13:35 PM' any_datetime_format UNION 
    SELECT '4/17/2015 12:29:54 PM' any_datetime_format UNION 
    SELECT '2/22/2016 10:44:11 AM' any_datetime_format UNION 
    SELECT '6/12/2014 10:08:07 AM' any_datetime_format UNION 
    SELECT '9/16/2013 12:18:22 PM' any_datetime_format 
) t 

如果格式不恰當的，你真正需要的東西，如「2017年2月13日下午1時十九分42秒」，你可以取代「CONVERT（日期時間，any_datetime_format） ''by'FORMAT（convert（datetime，any_datetime_format），'MM/dd/yyyy HH：mm：ss tt'）'