发明名称 |
METHOD AND APPARATUS FOR PERFORMING AN AGGREGATE QUERY IN A DATABASE SYSTEM |
摘要 |
In a computer-implemented method for generating a response to an aggregate query request on a source database, a random sample of records is extracted from the source database to generate a sample database. Then an aggregate query is performed on the sample database to generate a sample result, and an estimate of the aggregate query request on the source database is derived from the sample result.
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申请公布号 |
CA2228186(A1) |
申请公布日期 |
1998.07.31 |
申请号 |
CA19982228186 |
申请日期 |
1998.01.28 |
申请人 |
INFORMIX SOFTWARE, INC. |
发明人 |
FRIEDMAN, PAUL;SMEDBERG, MICHAEL |
分类号 |
G06F12/00;G06F17/30;(IPC1-7):G06F17/30 |
主分类号 |
G06F12/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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