[20231121]oracleSYS_GUID的组成.txt--//看了链接:http://ksun-oracle.blogspot.com/2023/08/oracle-sysguid-composition.html--//函数SYS_GUID,不知道作者如何猜测函数SYS_GUID的组成的,自己按照作者的测试,自己重复看看.SYS_GUIDgeneratesandreturnsagloballyuniqueidentifier(RAWvalue)madeupof16bytes.Onmostplatforms,thegeneratedidentifierconsistsofahostid

报错一org.elasticsearch.ElasticsearchStatusException:Elasticsearchexception[type=search_phase_execution_exception,reason=allshardsfailed] Suppressed:org.elasticsearch.client.ResponseException:method[POST],host[http://localhost:9200],URI[/wzx-test/_search?pre_filter_shard_size=128&typed_keys=true&max_co

表格结构20231121_152758mysql查询大综合三国英雄表的创建https://blog.csdn.net/ifubing/article/details/134534100查询所有数据查询所有的国家SELECT*FROMcountry查询所有的兵种SELECT*FROMsolder查询数据限定列显示兵种表的id，名称，介绍SELECTid,NAME,detailFROMsolder显示国家表的编号，名称，兵力SELECTid,NAME,POWERFROMcountry;给显示的列起别名用as起别名SELECTidAS编号,NAMEAS国家名,POWERAS兵力FROMcountry