摘要 |
Techniques are provided for more efficiently using the bandwidth of the I/O path between a CPU and volatile memory during the performance of database operation. Relational data from a relational table is stored in volatile memory as column vectors, where each column vector contains values for a particular column of the table. A binary-comparable format may be used to represent each value within a column vector, regardless of the data type associated with the column. The column vectors may be compressed and/or encoded while in volatile memory, and decompressed/decoded on-the-fly within the CPU. Alternatively, the CPU may be designed to perform operations directly on the compressed and/or encoded column vector data. In addition, techniques are described that enable the CPU to perform vector processing operations on the column vector values. |
申请人 |
ORACLE INTERNATIONAL CORPORATION |
发明人 |
ELLISON, LAWRENCE J.;GANESH, AMIT;MARWAH, VINEET;KAMP, JESSE;PATTHAK, ANINDYA C.;CHAVAN, SHASANK K.;GLEESON, MICHAEL J.;HOLLOWAY, ALLISON L.;BHATTACHARYYA, MANOSIZ |