摘要: bk1gx7xwj9du6SELECT * FROM HEADERS GJH WHERE ATTRIBUTE10 IS NULL FOR UPDATE 优化建议如下: 短期来说:建立一个索引来优化:create index idx_test_2 on HEADERS (ATTRIBUTE10,1); 阅读全文
posted @ 2018-03-02 14:34 feiyun8616 阅读(429) 评论(0) 推荐(0) 编辑