Handle None value in unique constraint check #66
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…iqueness in a column defined as UNIQUE. When checking constraints, ignore fields that allow NULL when the value is None.
gregmuellegger
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Jun 19, 2015
Handle None value in unique constraint check. Thanks @alewisohn
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Cool that makes sense! Thanks for taking the time to implement this. |
gregmuellegger
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Jun 19, 2015
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Hey I just released 0.10.1 which contains your changes. |
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Great. Thanks for responding so quickly. |
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According to the SQL standard, a NULL value does not count towards uniqueness in a column defined as UNIQUE. When checking constraints, ignore fields that allow NULL when the value is None.