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Editorial Team
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Asked: 2026-06-07T20:46:16+00:00

I have a table(production) which is having a column with name TimeSpent, the datatype

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I have a table(production) which is having a column with name TimeSpent, the datatype of this column is varchar and it stores data in HH:MM format example 10:23,14:59,11:00 etc.I want to write a query in sql which will sum this and give me a total in HH:MM Format only.
I tried some thing like this but getting error ‘Conversion failed when converting date and/or time from character string.’:- 

select CAST
(
(SUM (datepart(hh, convert (varchar, timespent, 108))) +
(sum(datepart(mi, convert (varchar, timespent, 108)))/60) ) AS VARCHAR(2)
)
+ ':' +
CAST
(
sum(datepart(mi, convert (varchar, timespent, 108))) - 60 * (sum(datepart(mi, convert (varchar, timespent, 108)))/60)
 as VARCHAR(2)) from production
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1 Answer

  1. Editorial Team

    Query worked for me, I had just updated my table and decreased the size of TimeSpent to Varchar(25) from varchar(60) and it is fixed.

    select CAST
(
(SUM (datepart(hh, convert (varchar, timespent, 108))) +
(sum(datepart(mi, convert (varchar, timespent, 108)))/60) ) AS VARCHAR(2)
)
+ ':' +
CAST
(
sum(datepart(mi, convert (varchar, timespent, 108))) - 60 * (sum(datepart(mi, convert (varchar, timespent, 108)))/60)
 as VARCHAR(2))from production
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