Get URL from the column - sql

Question

I want to get the URL from the Taskdescription tab and fetch it in other column with the name URL. Right now I am using this code
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
Thanks in advance

Answer 1

If you are using SQL Server, then this will do the trick
SELECT substring(ProcessInstanceDescription , charindex('http://', ProcessInstanceDescription ), charindex('KeyInstr', ProcessInstanceDescription ) - charindex('http://', ProcessInstanceDescription ))
FROM InternalUseOnly..ProcessInstance;
Here is a SQLFiddle
Let's just say I'm in a good mood today, here's the code you need. The URL will be in the first column.
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
update:
Regarding the Invalid length parameter passed to the LEFT or SUBSTRING function. error, this means that you have somewhere in ProcessInstanceDescription column, a row that doesn't fit the format for my SUBSTRING().
Good luck finding it as this is another question and I am not going to give you the solution to it, first of all because information is insufficient and your are not cooperative and apparently unwilling to do some effort yourself.