Hobo Joe
Hobo Joe

Reputation: 181

When filtering a Delphi TDataSet is there a difference between the NULL and BLANK keywords?

When using the Filter property of TDataSet I enter the following filters:

'State <> ''CA'' or State = BLANK'
'State <> ''CA'' or State = NULL'

Does BLANK mean empty but not null or are they equivalent or are there other differences between these two filters?

Upvotes: 2

Views: 1783

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