Oracle/SQL tutorialMichael Gertz
PLSQL stands for "Procedural Language extensions to SQL", and is an extension of SQL that is used in Oracle. PLSQL is closely integrated into the SQL language, yet it adds programming constructs that are not native to SQL.Our tutorial will start with the basics of Oracle such as how to...
select /*+ gather_plan_statistics */* from card_deck d1 join card_deck d2 on d1.suit = d2.suit and d1.val = d2.val order by d1.val fetch first 5 rows only; select * from table(dbms_xplan.display_cursor(:LIVESQL_LAST_SQL_ID, format => 'IOSTATS LAST')); Note that thi...
DescriptionMany new features have been added to support JSON development in recent releases. This Tutorial introduces the new JSON-related extensions to SQL and PL/SQL that have been added since Oracle Database 12c Release 1. These releases add significant new functionality for working with JSON do...
by Pankaj Jain Get coding quickly and effectively with Oracle PL/SQL, Oracle's database development language. This course is the first of a two part series, covering the essentials and fundamentals of Oracle PL/SQL.Preview this course What you'll learn In this Oracle PL/SQL training, you...
Importing Full Dump File Importing Objects of One Schema to another Schema Loading Objects of one Tablespace to another Tablespace Generating SQL File containing DDL commands using Data Pump Import Importing objects of only a Particular Schema
本教學課程示範如何查詢 SQL Server 2019 巨量資料叢集中的 Oracle 資料。 您會透過 Oracle 中的資料建立外部資料表,然後執行查詢。
; 1 row created. SQL> SQL> SQL> -- prepare data SQL> insert into Employee(EMPNO, EName, HIREDATE, ORIG_SALARY, CURR_SALARY, REGION, MANAGER_ID) 2 values (1,'Jason', to_date('19960725','YYYYMMDD'), 1234, 8767,'E', 2) 3 / 1 row created. SQL> insert into Employee(EMPNO, ...
1. Basic Upload Example Using SQL*Loader First, create the employee table as shown below. SQL> create table employee ( id integer, name varchar2(10), dept varchar2(15), salary integer, hiredon date ) Next create the control file that explains what needs to be upload and where. ...
SQL常用指令集(Oracle) 1、 Select rownum(oracle) top(mysql): 用于规定返回指定数目的值 Where roenum < number 2、 Like 用于在where子句搜索指定模式 Where 列名 [NOT] like ‘%string’ [ESCAPE]’\%(_)’ Where 列名 [NOT] like ‘_string’ [ESCAPE]’\%(_)’...