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MySQL query goes wrong

Hi Experts,

I've got this query:

SELECT id, date(date_format(datum, '%Y-%m-%d')) as dag FROM programmering

It works excelently but when I try to add a condition:

SELECT id, date(date_format(datum, '%Y-%m-%d')) as dag FROM programmering WHERE dag = '2012-05-26'

I get this error:

#1054 - Unknown column 'dag' in 'where clause'

strange because the row dag exists in the first version of this query but I can't use it in a condition?

All help is appreciated
MySQL ServerPHPDatabases

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8/22/2022 - Mon

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Thank you johanntagle
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
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