Best way to select everything that is not 0 and not '-'

[gustavofred]

Best way to select everything that is not 0 and not '-'?

my approach is variable > 0 and variable < 0

what other options to i have to deselect '-', which means null, right?

[jyothish8807]

may be this:

len(trim(Variable)) > 0 and Variable <> 0