相关疑难解决方法(0)

我在使用1000个INSERT语句之间运行性能比较:

INSERT INTO T_TESTS (TestId, FirstName, LastName, Age) 
   VALUES ('6f3f7257-a3d8-4a78-b2e1-c9b767cfe1c1', 'First 0', 'Last 0', 0)
INSERT INTO T_TESTS (TestId, FirstName, LastName, Age) 
   VALUES ('32023304-2e55-4768-8e52-1ba589b82c8b', 'First 1', 'Last 1', 1)
...
INSERT INTO T_TESTS (TestId, FirstName, LastName, Age) 
   VALUES ('f34d95a7-90b1-4558-be10-6ceacd53e4c4', 'First 999', 'Last 999', 999)

..versus使用具有1000个值的单个INSERT语句:

INSERT INTO T_TESTS (TestId, FirstName, LastName, Age) 
VALUES 
('db72b358-e9b5-4101-8d11-7d7ea3a0ae7d', 'First 0', 'Last 0', 0),
('6a4874ab-b6a3-4aa4-8ed4-a167ab21dd3d', 'First 1', 'Last 1', 1),
...
('9d7f2a58-7e57-4ed4-ba54-5e9e335fb56c', 'First 999', 'Last 999', 999)

令我惊讶的是,结果与我的想法相反:

• 1000 INSERT语句:290毫秒.
• 1个带有1000个值的INSERT语句:2800毫秒.

测试直接在MSSQL Management …