对于sql,进入到公司之后才比较了解,现在阐述一个task,其中用到了case as语句,需求:改变一个搜索结果的排列顺序,有不同的类型从数据库中直接查询,这几种类型在代码中都是枚举类型,所以查询的结果也按照枚举的类型来排列。 解决办法,用case as方法改变枚举类型在数据库中存储的数字大小 ,这样可以改变从字段排列顺序,...
闪回事务查询是通过数据字典视图flashback_transaction_query来查询历史事务相关元数据,并且可以通过该视图的undo_sql字段会给出相应的SQL从逻辑层面撤销事务。要使用flashback_transaction_query查询事务信息首先要打开附加日志记录事务信息: AI检测代码解析 alter database add supplemental log data; 1. 下面对hr.employees...
Projects2 Wiki Security Insights Additional navigation options Closed #4499 Description mkarg openedon Jul 13, 2023 Search first I searched and no similar issues were found Description SQL Anywhere is able to limit CHAR and VARCHAR columns to a width either denoted in bytes or in characters. As...
ORA-12547 TNS: Lost Contact Getting the following error when trying to connect using Sql*Plus ERROR: $sqlplus /as sysdba SQL*Plus: Release11.1.0.7.0– Production on Wed Mar3011:59:062011Copyright (c)1982,2008, Oracle. All rights reserved. ERROR: ORA-12547: TNS:lost contact CAUSE: 1) to...
现在使用CTE来解决上面的问题,SQL语句如下: AI检测代码解析 with cr as ( select CountryRegionCode from person.CountryRegion where Name like 'C%' ) select * from person.StateProvince where CountryRegionCode in (select * from cr) 1. 2.
.github apis config controllers docs hack helm mocks pkg scripts test webhooks .gitignore CONTRIBUTING.md Dockerfile LICENSE Makefile OWNERS PROJECT Pipfile Pipfile.lock README.md SECURITY_CONTACTS code-of-conduct.md go.mod go.sum main.go ...
ar SQL serveri. Serveris nav atrasts, vai nav pieejams. Pārbaudiet, vai instances nosaukums ir pareizs un ka SQL Server ir konfigurēts, lai atļautu attālo savienojumu. (nodrošinātājs: nosaukumu programmkanālus sniedzēja kļūda...
{"categoryId":"SQL-Server"},"routeName":"CategoryPage"},{"linkType":"EXTERNAL","id":"external-link-2","url":"/Directory","target":"SELF"}],"linkType":"EXTERNAL","id":"communities","url":"/","target":"BLANK"},{"children":[{"linkType":"...
msql2mysql(1) mt(1) multixterm(1) mutt(1) muttbug(1) mv(1) mv(1g) my_print_defaults(1) myisam_ftdump(1) myisamchk(1) myisamlog(1) myisampack(1) mysql-stress-test.pl(1) mysql-test-run.pl(1) mysql(1) mysql.server(1) mysql_51(1) mysql_client_test(1) mysql_client_te...
Išsprendžia pažeidžiamumas "Microsoft SQL Server", kuris gali leisti pažeidėjui išnaudoti pažeidžiamumą, jei įsibrovimo kredencialai leidžia pasiekti "SQL Server" duomenų bazę. Pažeidėjas, s...