| 摘要 |
PROBLEM TO BE SOLVED: To provide a data tabulation method for reducing the using amount of a memory and realizing cross tabulation at a high speed. SOLUTION: This method for executing a sum-up processing to plural table form data respectively expressed as the array of records including items and item values included in them is provided with a step for constituting the table form data so as to be respectively divided into one or more information blocks composed of a value list storing the item values in the order of item value numbers corresponding to the item values belonging to a specified item and a pointer array storing pointer values for instructing the item value numbers in the order of unique record numbers, a step for providing a presence number array in which a presence number for indicating the number of the records provided with the equal item value number is arranged corresponding to the value in the value list in the information block, a step for finding the item value in which the presence number is 0 in the presence number array and a step for preparing a sum-up table composed of the presence number corresponding to the item value in the item in the state of eliminating the found item value.
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