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执行计划中哪些统计信息是累计的?

我是芄兰 2024-02-02 阅读 13

--------------------------------------------------------------------------------------------    
| Id  | Operation            |   A-Time   | Buffers | Reads  | Writes | Used-Mem | Used-Tmp|    
--------------------------------------------------------------------------------------------    
|   0 | SELECT STATEMENT     |00:00:06.78 |    6014 |   9652 |   2479 |          |         |    
|   1 |  SORT AGGREGATE      |00:00:06.78 |    6014 |   9652 |   2479 |          |         |    
|*  2 |   HASH JOIN          |00:00:06.77 |    6014 |   9652 |   2479 |  272K (0)|         |    
|   3 |    TABLE ACCESS FULL |00:00:00.01 |      54 |      0 |      0 |          |         |    
|*  4 |    HASH JOIN         |00:00:06.61 |    5960 |   9652 |   2479 |  932K (4)|      20M|    
|   5 |     TABLE ACCESS FULL|00:00:00.01 |    1520 |      0 |      0 |          |         |    
|   6 |     TABLE ACCESS FULL|00:00:00.11 |    4440 |      0 |      0 |          |         |    
--------------------------------------------------------------------------------------------

累计的项目为:

time
buffers
reads
writes


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