1.如何实现分页显示的Oracle和DB2的写法Oracle 可以这样实现﹕SQL>select rownum,* from BSEMPMS where rownum >5 and rownum <100;DB2 可以这样实现﹕select * from (select ROW_NUMBER() over() as a, db2admin.bsempms.* fromdb2admin.bsempms) as temp where a&g…
数据倾斜成因:由于数据分布不均匀,造成数据大量的集中到一点,造成数据热点。具体为某一个reduce接收到的数据是其他reduce的n倍,导致明显的木桶效应。症状:1,对表做select count(1) from tb group by key&a…
参考 Updating an MVC Partial View with Ajax RenderPartial vs RenderAction vs Partial vs Action in MVC Razor Adding a Custom Directory to Razor View Engine’s Partial View Locations in ASP.Net MVC3转载于:https://www.cnblogs.com/HQFZ/p/4560827.html