query report for time between ?

query report for time between ?

Dear,

we use manual to assign the incident to technician, so when the user create the incident it's show not assign ,then when the responsible person receive a notification that new case is open he will assign it to the available technician, so I need report to show me the time between the created case and assign to technician.

waiting your support for this.

Database :MSSQL
Build No.8212

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