SORT PROCESSING SYSTEM USING KANJI FIELD AS SORT KEY

摘要

PURPOSE:To improve the sort processing efficiency and also to reduce the memory capacity by storing a sort KANJI (Chinese character) order table used for sort processing into a system common virtual storage as the shared software and having accesses in common among plural processes. CONSTITUTION:The number N of KANJI fields designated as sort keys is obtained from a sort parameter table 2. Then '1' is set to a control variable I so that the position L, the number S of characters, and the KANJI order element T of the I-th KANJI field are obtained from the table 2. At the same time, an identification name X of a sort KANJI order table stored in a common software virtual storage area 4 corresponding to the element T is obtained from a sort KANJI order control table 7. Then '0' is set to a control variable J, and a code C of the (L+J)-th KANJI counted from the tip of a record is obtained. Furthermore the collating order value N of the code C is obtained by reference to the sort KANJI table of the name X and adds the value N to the record. The comparison is carried out between J and S. If J is larger than S, '1' is added to the value of I. Then I is compared with N. If I is larger than N, the processing is through. Thus the sort efficiency is improved.