Deafaul Value using SQL query

Hi
I'm trying to make a default value using Computations;
when I create computation,
I select
Computation item: PXX_TEST
computation type: SQL query
computation Point: I tried all
Computation: select X FROM Y WHERE X= '1'
This is the way to get Default Value ??
I need to display the value when the page is open
Thanks
MM

MM,
You can use the default value attribute of the item to set a value if the item's source produces a null. A computation (before/after header) can work too, but it's possible that the item source and Source Used attribute (Always/Only) are interfering with your computation so you might want to try setting Source Used to 'Only...' if you have a computation setting the item.
Scott

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