X++ cannot select exist record in table

Hi all,

I have a problem to select record BY x++  "select .. .from .. .where ...". It always return empty.

To make it clearer, I changed it to "select * from ... where recid=...."   and the result is also empty. But if I used SQL DB management tools to select the record in the same table with the same recid, I can find my record exist in the table.

Can anyone tell me why some of the record seems hidden in the table when I select by X++? Thank you!