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Can Count(), CASE(), and Distrinct be combined?
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À
28/01/2019 15:39:55
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
01665760
Message ID:
01665763
Vues:
50
>>Hi,
>>
>>I am trying to count unique values in the field (using SQL Select) if the value is greater than 0
>>
>>So, here is syntax I use (simplified) (which generates an error):
>>
>>select count( case when mytable.myfield = 0 then 0 else distinct( mytable.myfield ) end ) as TotCount
>>
>>
>>What is wrong in the above syntax?
>
>I am not aware of that syntax in SQL. It might work but I've never used it. With what I know, I would use this:
>
>
SELECT DISTINCT mytable.myfield FROM mytable WHERE mytable.myField != 0 INTO CURSOR tmp1
>? _TALLY  && Display the distinct count
First, thank you for your message. You see, my entire SQL Select need to include the records where mytable.myfield is 0. But I only want to count those that are not 0. Therefore, I cannot use your syntax.
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