I try to check two conditions when checking first condition if it is true then ignore second condition. if first condition false then check second condition.
here query like this
select * from region_daten inner join werte_inc where datum = today or datum = yesterday"
here returns today and yesterday because both are true but before 11:30 am i have only yesterday date after 11:30 am i have both dates. when i do with 'or' i got both dates data. but i need to show if date is today date i have to display today date data. if not i have to display yesterday data.
Let's create a truth table:
date = today | date = yesterday | desired result
-------------+------------------+---------------
true | true | true
true | false | true
false | true | true
false | false | false
If this table is correct according to Your question, then what You are looking for is an OR:
SELECT *
FROM table
WHERE date = today OR date = yesterday
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