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Tatuya Kamada authored
It prevent to create unnecessary queries like a 'is NULL'. git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27858 20353a03-c40f-0410-a6d1-a30d3c3de9de
fb404878
It prevent to create unnecessary queries like a 'is NULL'. git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27858 20353a03-c40f-0410-a6d1-a30d3c3de9de