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The "Hive/LanguageManual/UDF" page has been changed by PaulYang.
http://wiki.apache.org/hadoop/Hive/LanguageManual/UDF?action=diff&rev1=51&rev2=52
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||A + B ||All number types ||Gives the result of adding A and B. The type of the result is the same as the common parent(in the type hierarchy) of the types of the operands. e.g. since every integer is a float, therefore float is a containing type of integer so the + operator on a float and an int will result in a float. ||
||A - B ||All number types ||Gives the result of subtracting B from A. The type of the result is the same as the common parent(in the type hierarchy) of the types of the operands. ||
||A * B ||All number types ||Gives the result of multiplying A and B. The type of the result is the same as the common parent(in the type hierarchy) of the types of the operands. Note that if the multiplication causing overflow, you will have to cast one of the operators to a type higher in the type hierarchy. ||
- ||A / B ||All number types ||Gives the result of dividing B from A. The type of the result is the same as the common parent(in the type hierarchy) of the types of the operands. If the operands are integer types, then the result is the quotient of the division. ||
+ ||A / B ||All number types ||Gives the result of dividing B from A. The result is a double type. ||
||A % B ||All number types ||Gives the reminder resulting from dividing A by B. The type of the result is the same as the common parent(in the type hierarchy) of the types of the operands. ||
||A & B ||All number types ||Gives the result of bitwise AND of A and B. The type of the result is the same as the common parent(in the type hierarchy) of the types of the operands. ||
||A | B ||All number types ||Gives the result of bitwise OR of A and B. The type of the result is the same as the common parent(in the type hierarchy) of the types of the operands. ||