| 摘要 |
A system includes reception of a transaction to change a columnar table, recordation of the transaction within a delta structure in a volatile memory, recordation of the transaction within a log of a persisted memory, reception of an instruction to merge the delta structure in the volatile memory with a first instantiation of the columnar table in the volatile memory, and in response to the instruction, merging of the delta structure in the volatile memory with the first instantiation of the columnar table in the volatile memory to create a merged columnar table in the volatile memory, and not storing the merged columnar table in the persisted memory
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