发明申请
US20070288429A1 Techniques of optimizing XQuery functions using actual argument type information
有权
使用实际参数类型信息优化XQuery函数的技术
- 专利标题： Techniques of optimizing XQuery functions using actual argument type information
- 专利标题（中）： 使用实际参数类型信息优化XQuery函数的技术
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申请号： US11452769申请日： 2006-06-13
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公开(公告)号： US20070288429A1公开(公告)日： 2007-12-13
- 发明人: Zhen Hua Liu , Muralidhar Krishnaprasad
- 申请人： Zhen Hua Liu , Muralidhar Krishnaprasad
- 主分类号： G06F17/30
- IPC分类号： G06F17/30 ; G06F7/00
摘要：
A method for optimizing functions is described. A query including an invocation of a function is received. A function declaration indicates that the function is associated with a first set of datatypes. At compile-time, static type-checking is performed on the query. During the static type-checking, a second set of datatypes is determined for the function. The second set of datatypes includes the datatype of each argument of the function that is specified in the invocation. The query is compiled, where compiling the query includes compiling the function with the second set of datatypes.
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