gsql:Oracle_Functions.sql:1035: NOTICE: | function | nvl2(anyelement,anyelement,anyelement) | 1.0 | sql | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | function | trunc(timestamp,text) | 1.0 | sql | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: ...
For Example: Let’s consider the product table used in sql joins. We can use ROUND to round off the unit_price to the nearest integer, if any product has prices in fraction. SELECT ROUND (unit_price) FROM product; 2) Character or Text Functions: Character or text functions are used to...
ORACLE 11G提供的PL/SQL函数的缓存机制(对于不同的会话之间可以共用),下面我们使用第一种机制进行查询结果的缓存,如下所,指定关键词RESULT_CACHE来启用Cross-Session PL/SQL Function Result Cache CREATE OR REPLACE FUNCTION SLOW_FUNCTION(p_value IN NUMBER) 1. RETURN NUMBER 1. RESULT_CACHE 1. AS 1. BEGIN...
SQL*Net Events log file sync 日志文件同步。用户提交或回滚时,必须等待LGWR将redo信息写入到redo日志文件中,才可以完成。 When a user session commits (or rolls back), the session's redo information must be flushed to the redo logfile by LGWR. The server process performing the COMMIT or ROLLBACK...
Minimize the number of extents. When this option is selected, the new extent size for each index is calculated as follows: working size equals the total size multiplied by the percent used. This working size is then passed through the Make extent this size or Round All Extent Sizes to the...
Note that this result can be obtained in a simpler manner by using the Oracle SQL for Analysis functions. See the “Analysis” section in Chapter 4 for more details. Pre Oracle 9i Joining Prior to Oracle version 9i, all linking was done in the WHERE clause. A clause would be written in...
Oracle SQL Developer to Connect to Hive 2.1.4 Developing a CREATE TABLE Statement for ORACLE_HIVE 2.1.4.1 Using the Default ORACLE_HIVE Settings 2.1.4.2 Overriding the Default ORACLE_HIVE Settings 2.2 Creating an Oracle External Table for Oracle NoSQL Database 2.2.1 Creating a Hive External ...
Oracleâ Migration Workbench Reference Guide for SQL Server and Sybase Adaptive Server Migrations Release 9.2.0 for Microsoft Windows 98/2000/NT and Microsoft Windows XP September 2002 Part Number: B10254-01 This reference guide describes how to migrate from Microsoft SQL Server 6.5, Microsoft SQL...
VERSION_OPERATION :这条记录执行的操作(Insert/Update/Delete)SELECTUNDO_SQLFROMFLASHBACK_TRANSACTION_QUERYWHEREXID='000A000D00000029'; 闪回事务查询。 闪回事务查询有别于闪回查询的特点有以下3个: (1)其正常工作不但需要利用撤销数据,还需要事先启用最小补充日志。
SQL> copy from user1 to user2 create table2 using select * from table1; 9. 视图中不能使用 order by ,但可用 group by 代替来达到排序目的 SQL> create view a as select b1,b2 from b group by b1,b2; 10. 通过授权的方式来创建用户 ...