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此值是我寫的查詢:比較最近InnoDB_Rows_Inserted變量與舊值
SELECT variable_name,0 - variable_value
FROM information_schema.global_status
WHERE variable_name IN ('Innodb_rows_inserted','Innodb_rows_updated'
,'Innodb_rows_deleted','Innodb_rows_read'
,'Innodb_data_reads','Innodb_data_read'
, 'Innodb_data_writes','Innodb_data_written');
+----------------------+--------------------+
| variable_name | 0 - variable_value |
+----------------------+--------------------+
| INNODB_DATA_READ | -6672384 |
| INNODB_DATA_READS | -422 |
| INNODB_DATA_WRITES | -22 |
| INNODB_DATA_WRITTEN | -333312 |
| INNODB_ROWS_DELETED | 0 |
| INNODB_ROWS_INSERTED | -2 |
| INNODB_ROWS_READ | -17 |
| INNODB_ROWS_UPDATED | 0 |
+----------------------+--------------------+
8 rows in set (0.00 sec)
現在,我要爲INNODB_ROWS_INSERTED
最近更新的價值和其最後的值之間的差異。
例如 - 在上面的輸出中,INNODb_ROWS_INSERTED
的值爲2.如果我再插入一個並重新運行此查詢,則更新的值將爲3.現在我想顯示差異,即1在新的表或文件。
感謝
檢索值,保存它,做你的東西,再次檢索值,比較它。但請注意,這些值是系統寬度。如果任何其他查詢並行執行,則它們也會影響值。 –