2018年12月17日
Difference between count(1) and count(*)
摘要： Some people prefer count(1) over count(*) and using count(1) to optimize his statements, but actually they have not difference. Here is test code and 阅读全文
posted @ 2018-12-17 09:06 秋天的林子 阅读(203) 评论(0) 推荐(0) 编辑