select - MySQL View check if data is NULL -

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I must include a case in the selection to choose whether the data I am adding to my view is taped, In which case I want to enter it in zero or not.

Do you mean something like that? Select 

  if (`field 'is zero, 0,` field`) ...

There also "IFNULL ()": 

  select IFNULL (`field`, 0) ...

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