從列中獲取URL

Question

我想從Taskdescription選項卡獲取URL，並使用名稱URL在其他列中獲取它。現在，我使用這個代碼

select 
    c.StreamName AS Category, 
    ProcessInstanceAppianID as jobId, 
    a.ProcessInstanceName, 
    a.ProcessInstanceTargetDate AS TargetDate, 
    a.ProcessInstanceDescription as TaskDescription, 
    b.Name as department, 
    SUBSTRING(ProcessInstanceName, NULLIF(PATINDEX('%[0-9][0-9][0-9][0-9][0-9]%',ProcessInstanceName),0),7) as code 
from InternalUseOnly..ProcessInstance a 
      join InternalUseOnly..Departments b on 
          b.KeyDepartment = a.KeyDepartmentEntered 
         AND b.updoperation < 2 
      join InternalUseOnly..ProcessStream c on 
          c.KeyProcessStream = a.KeyProcessStream 
         and c.updoperation < 2 
where ProcessInstanceCompleted is null 
     and a.KeyProcessStream in (330) 
     and a.updoperation <2 

在此先感謝

Answer 1

如果您正在使用SQL Server，那麼這將這樣的伎倆

SELECT substring(ProcessInstanceDescription , charindex('http://', ProcessInstanceDescription), charindex('KeyInstr', ProcessInstanceDescription) - charindex('http://', ProcessInstanceDescription)) 
FROM InternalUseOnly..ProcessInstance; 

這裏是一個SQLFiddle

我們只是說我心情很好今天，這是你需要的代碼。該網址將位於第一列。

select 
    substring(a.ProcessInstanceDescription , charindex('http://', a.ProcessInstanceDescription), charindex('KeyInstr', a.ProcessInstanceDescription) - charindex('http://', a.ProcessInstanceDescription)), 
    c.StreamName AS Category, 
    ProcessInstanceAppianID as jobId, 
    a.ProcessInstanceName, 
    a.ProcessInstanceTargetDate AS TargetDate, 
    a.ProcessInstanceDescription as TaskDescription, 
    b.Name as department, 
    SUBSTRING(ProcessInstanceName, NULLIF(PATINDEX('%[0-9][0-9][0-9][0-9][0-9]%',ProcessInstanceName),0),7) as code 
from InternalUseOnly..ProcessInstance a 
      join InternalUseOnly..Departments b on 
          b.KeyDepartment = a.KeyDepartmentEntered 
         AND b.updoperation < 2 
      join InternalUseOnly..ProcessStream c on 
          c.KeyProcessStream = a.KeyProcessStream 
         and c.updoperation < 2 
where ProcessInstanceCompleted is null 
     and a.KeyProcessStream in (330) 
     and a.updoperation <2 

更新：

關於Invalid length parameter passed to the LEFT or SUBSTRING function.錯誤，這意味着你有地方在ProcessInstanceDescription列，行不適合的格式爲我SUBSTRING()。

祝你好運，因爲這是另一個問題，我不會給你解決方案，首先是因爲信息不足，你不合作，顯然不願意自己做一些努力。