Re: Divid by zero bug in float
От | Tom Lane |
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Тема | Re: Divid by zero bug in float |
Дата | |
Msg-id | 13354.1140630011@sss.pgh.pa.us обсуждение исходный текст |
Ответ на | Divid by zero bug in float ("Jim C. Nasby" <jnasby@pervasive.com>) |
Ответы |
Re: Divid by zero bug in float
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Список | pgsql-hackers |
"Jim C. Nasby" <jnasby@pervasive.com> writes: > Shouldn't this produce Infinity instead of an error? > postgresql=# select 5::float/0::float; > ERROR: division by zero No, I don't think so. SQL92 6.12 <numeric value expression> quoth: 4) The dyadic arithmetic operators <plus sign>, <minus sign>, <as- terisk>, and <solidus> (+, -, *, and/, respectively) specify addition, subtraction, multiplication, and division, respec- tively. If thevalue of a divisor is zero, then an exception condition is raised: data exception-division by zero. There is nothing in there about allowing IEEE infinities instead, and I very strongly doubt that the average database user would expect such behavior. regards, tom lane
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