Sqlserver date just have date part, not contains time part. Oracle date format has date and time part. This is a big difference. 但是如何你使用oracle sql developer, 不修改默认的设置,你查询 Select sysdate from dual;是看不到时间part的,你可以使用 Select to_char(sysdate,'yyyy-mm-dd hh24:mi...
一提到SQL Server,大家一般都只想到Microsoft SQL Server,而非Sybase SQL Server。SQL Server最初是由Microsoft, Sybase and Ashton-Tate三家公司拦下的生意,是为IBM(又出现了)公司的OS/2操作系统开发的。随着OS/2项目的失败,大家也分道扬镳。 Microsoft自然转向自己的win操作系统,作为windows NT软件方案的一部分。
SQL>select object_name,status from user_objects where object_type='FUNCTION'; SQL>select object_name,status from user_objects where object_type='PROCEDURE'; 查看函数和过程的源代码 SQL>select text from all_source where owner=user and name=upper('&plsql_name'); 三、查看数据库的SQL 1、查看...
IMAGE and TEXT Data Types (Binary Large Objects) Microsoft SQL Server User-Defined Data Types 2.1.3.1.1 DATETIME Data Types The date/time precision in Microsoft SQL Server is 1/300th of a second. Oracle has the data type TIMESTAMP which has a precision of 1/100000000th of a second....
For years now there's been a constant war between Microsoft supporters and Oracle supporters. Oracle has these features, SQL Server has these features, etc. But that's not really where the real importance lies. Sure, functionality is a part of it because your database should be able to do...
游标(Cursor)是Oracle数据库中SQL解析和执行的载体,它可以分为共享游标(Shared Cursor)和会话游标(Session Cursor)。共享游标可以细分为父游标(Parent Cursor)和子游标(Child Cursor),可以通过视图V$SQLAREA和V$SQL来查看当前缓存在库缓存(Library Cache)中的父游标和子游标,其中V$SQLAREA用于查看父游标,V$SQL用于查看子...
HiCan anyone tell what is the Difference between Oracle and Sql?Thanks in AdvanceReply Answers (2) C# Asynchronous read and write with NetworkStream How to create forums in C# About Us Contact Us Privacy Policy Terms Media Kit Sitemap Report a Bug FAQ Partners C# Tutorials Common Interview...
What is the difference between an "empty" value and a "null" value? When I select those fields that are "empty" versus "null", I get two different result sets. Answer:An empty string is treated as a null value in Oracle. Let's demonstrate. ...
SQL Macros - Creating parameterised views This tutorial explains how to create a parameterized view using SQL Macros. The examples use the built-in sales history schema so there are no setup steps. Script Simple Explain Plan This script explains the plan for a query of the sh.sales and sh....
Compare and create SQL Difference statement between 2 schemas Select objects to compare List of differences and SQL Code to be executed Run script output to SQL Worksheet to be executed against connection of choice 8. Process Commands Syntax Highlighting ...