Column partition based numerical data compression method for column storage database
The invention provides a numerical data compression method for a column storage database, which includes: extracting one column of data from a data table, dividing each column of data into multiple subsidiary columns, counting characteristic values of data distribution laws in each subsidiary column...
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| Hauptverfasser: | , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention provides a numerical data compression method for a column storage database, which includes: extracting one column of data from a data table, dividing each column of data into multiple subsidiary columns, counting characteristic values of data distribution laws in each subsidiary column, and compressing by selecting the corresponding lightweight compression algorithm according to the characteristic values of the data distribution laws, wherein different data in each subsidiary column occupies identical space. The numerical data compression method is simple in operation and applicable to compression of data of regular distribution and irregular distribution. |
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