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@ -1,7 +1,7 @@ |
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Frequently Asked Questions (FAQ) for PostgreSQL |
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Last updated: Thu Feb 24 19:32:04 EST 2005 |
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Last updated: Thu Feb 24 19:33:07 EST 2005 |
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) |
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@ -645,10 +645,10 @@ |
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FROM tab |
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WHERE col IS NULL; |
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To sort by the NULLIS NULL |
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and IS NOT NULL modifiers in your WHERE clause. Things that are true |
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will sort higher than things that are false, so the following will put |
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NULL entries at the top of the resulting list: |
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To sort by the NULL status, use the IS NULL and IS NOT NULL modifiers |
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in your WHERE clause. Things that are true will sort higher than |
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things that are false, so the following will put NULL entries at the |
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top of the resulting list: |
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SELECT * |
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FROM tab |
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ORDER BY (col IS NOT NULL) |
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