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Asked: 2026-06-07T16:58:53+00:00

I am new to SQL and I know how to use filter in sql

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I am new to SQL and I know how to use filter in sql with decimal type, but this time I am working with string type.

  • I need to filter anything greater than “3 hrs” or “180 min”
  • I was able to get it to filter anything greater than “3 hrs”
  • But not able to filter anything greater than 180 mins

here is screenshot of output for this table.

enter image description here

Here is SQL select statement and it is working

SELECT EVENTID,
       STARTDATETIME,
       F_NAME,
       DURATIONHM,
       NUM_PEOPLE

  FROM EVENT_FACT
  where DURATIONHM > '3 hrs'
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1 Answer

  1. Editorial Team

    You can’t write the query the way that you want to. You need to store the duration in minutes, as a number, and then use:

    where duration >= 3*60

    You can, with a bunch of effort, create a view that parses the string to get the minutes. In some databases, you can also convert such a string into a time or interval data type, which gets you further along.

    However, what you have discovered is that storing the duration as a string does not meet the query requirements that you have on the field. (You would discover the same thing if you tried to order by duration.)

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