Tutorial #9:PL SQL Package: Oracle PL/SQL Package Tutorial With Examples Tutorial #10:PL SQL Transactions – COMMIT, ROLLBACK And SAVEPOINT Tutorial #11:Triggers In PL SQL: Tutorial With Example Programs Tutorial #12:PL SQL Datetime Format: Date and Time Functions In PL/SQL Tutorial #13:Co...
索引表也称为PL/SQL表,用于处理PL/SQL数组的数据类型.但是索引表与高级语言的数组是有区别的:高级语言数组的元素个数是有限制的,并且下标不能为负值;而索引表的元素个数没有限制,并且下标可以为负值,甚至可以使用VARCHAR2类型. PL/SQL中是没有现成的索引表数据类型的,要使用索引表,必须先进行数据类型定义,其定义...
for example: Write a validation check to ascertain that all required fields have a value and set a flag called Record Complete to On if they do. Write a validation check that compares the timestamp of the last data update for each unlocked record to the...
The following example shows how you can embed PL/SQL in a high-level host language such as C and demonstrates how a banking debit transaction might be done. Input Table SQL> SELECT * FROM accounts ORDER BY account_id;ACCOUNT_ID BAL--- ---1 10002 20003 15004 65005 500 PL/SQL Block in...
5Example 6类似语言 基本概念 是Oracle对标准数据库语言SQL的过程化扩充,它将数据库技术和过程化程序设计语言联系起来,是一种应用开发语言,可使用循环,分支处理数据,将SQL的数据操纵功能与过程化语言数据处理功能结合起来.PL/SQL的使用,使SQL成为一种高级程序设计语言,支持高级语言的块操作,条件判断,循环语句,嵌套等,...
(2)PL/SQL fullysupports SQL data types. You need notconvert between PL/SQL and SQL data types. For example, if your PL/SQL programretrieves a value from a column of the SQL type VARCHAR2, it can storethat value in a PL/SQL variable of the type VARCHAR2. ...
Program-error == internal problem in pl/sql Zero-divide == divide by zero invalid-cursor == if a cursor is not open and u r trying to close it Login-denied == invalid user name or password Invalid-number == if u r inserting a string datatype for a number datatype which is already...
select sql_id, username, osuser, machine, program from v$session where username = 'gavin' 1. 2. 3. Step2. 查看该SQL_ID历史的解析计划变换 select distinct a.instance_number, trunc(b.begin_interval_time, 'mi'), sql_id, plan_hash_value ...
Oracle PL/SQL by Example, 5/EBenjamin RosenzweigElena Rakhimov
Let us see another example. Code implementation with IN OUT parameter: DECLARE num number; PROCEDURE addNum(i IN OUT number) IS BEGIN i := i + i; END; BEGIN num := 1; addNum(num); dbms_output.put_line('The sum is ' || num); ...