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null value |
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null valueA value in a field or variable that indicates nothing was ever derived and stored in it. For example, in a decimal-based amount field, a null value might be all binary 0s (null characters), but not a decimal 0. The decimal 0 would imply no dollars and cents, which could in fact be a valid derived value. See null. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Third, given that the minimum value of kappa deemed to be clinically important will depend on the measurement context, in addition to a null value of zero, non-zero null values between . association between preterm birth and first-month exposure to ozone) or a null value to become a significant protective effect (preterm birth and last-month ozone exposure). The null value function (NVL), which returns either the input value or an alternate value in the case where the input has a null value, may be used when a null value is unacceptable. |
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