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When there are E empty partitions left, auto-create N new empty partitions for SYSTEM_TIME partitioning rotated by INTERVAL/LIMIT and marked by AUTO_INCREMENT keyword. Syntax change: AUTO_INCREMENT keyword (or shorter AUTO may be used instead) after LIMIT/INTERVAL clause. CREATE OR REPLACE TABLE t (x INT) WITH SYSTEM VERSIONING PARTITION BY SYSTEM_TIME LIMIT 100000 AUTO_INCREMENT; CREATE OR REPLACE TABLE t (x INT) WITH SYSTEM VERSIONING PARTITION BY SYSTEM_TIME INTERVAL 1 WEEK AUTO_INCREMENT; The current revision implements hard-coded values of 1 for E and N. As well as auto-creation threshold MinInterval = 1 hour, MinLimit = 1000. The name for newly added partition will be first chosen as "pX", where X is partition number and "p" is hard-coded name prefix. If this name is already occupied, the X will be incremented until the resulting name will be free to use. ALTER TABLE ADD PARTITION is now always fast. If there some history partition overflow occurs manual ALTER TABLE REBUILD PARTITION is needed. |
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