前記：
近來項目用到Oracle數據庫，大學學了點，后面基本忘記得差不多了，雖然基本語法跟sql 差不多，但是oracle知識是非常多的。
這里簡單說點基礎知識，希望后面補上更多的關於ORacle知識博客。入門的朋友可以看看，高手就可以繞過了。
不曉得你們用的什么工具，我用的Toad。用起來還是不錯的。
第一部分，創建數據，
create table student
(
sName varchar(20) primary key,
sAge int,
sEmail varchar(100),
sPhone varchar(20),
sAddress varchar(100)
)
insert into student values('Jack',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jack1',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jack2',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jack3',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jack54',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jack6',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jack7',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jack21',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Rose',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('rose1',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('rose2',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('rose4',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Adi',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Aditt',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Niyes',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Jassic',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Carken',21,'dfdf@qq.com','2134343','Singapore');
insert into student values('Donview',21,'dfdf@qq.com','2134343','Singapore');
commit;
執行其他都會報錯的.
第二部分，看幾個關於Spool的命令
spool c:/test.log; --將下面的查詢結果放在這個文件中，如果文件不存在，會自動創建 select * from student; spool off; --完成spool --執行后，你就可以去相應的目錄去查看Log了。 --再看一個例子 set feedback on; --如果這里設置為off,則看不到18 rows selected set termout on; --如果這里設置為off,則看不到結果 set echo on; --這里看到SQL>命令，就是這個開啟的原因 spool c:/test.log; select * from student; spool off; exit;
結果（只顯示了一部分）：
spool常用的設置
set echo on; //顯示start啟動的腳本中的每個sql命令，缺省為off
set feedback on; //回顯本次sql命令處理的記錄條數，缺省為on
set heading off; //輸出域標題，缺省為on
set pagesize 0; //輸出每頁行數，缺省為24,為了避免分頁，可設定為0。
set termout on; //顯示腳本中的命令的執行結果，缺省為on
set trimout on; //去除標准輸出每行的拖尾空格，缺省為off
set trimspool on; //去除重定向（spool）輸出每行的拖尾空格，缺省為off
上面的命令最好自己親自動手測試下。因為我發現自己測試是跟下面的鏈接，其他前輩有出入。
所以自己動手去實踐下比較好。
對於spool的相關了解，查看下面的這個鏈接
http://blog.sina.com.cn/s/blog_6bccf0360101hzsh.html
http://blog.csdn.net/shangyang326/article/details/3304621
第三部分，幾個oracle 腳本知識入門。
主要查看下面這兩個鏈接:
http://www.oracle.com/technetwork/issue-archive/2013/13-mar/o23plsql-1906474.html
http://docs.oracle.com/cd/B10500_01/appdev.920/a96624/a_samps.htm
1,我們想查看姓名=Jack 的信息,這里只有一條記錄。
set serveroutput on; --要想看到打印結果，則必須開啟這個命令。
DECLARE
l_name varchar(100);
--l_name student.sName%TYPE; 相同的效果，推薦使用這個。
BEGIN
SELECT sName INTO l_name
FROM student
WHERE sName = 'Jack';
DBMS_OUTPUT.put_line ('find the name: '||l_name);
END;
結果：
find the name: Jack
PL/SQL procedure successfully completed.
%RowType 的使用，獲取某行的數據類型。
set serveroutput on;
DECLARE
rowData student%ROWTYPE;
BEGIN
SELECT * INTO rowData
FROM student
WHERE sName = 'Jack';
DBMS_OUTPUT.put_line ('find the name: '||rowData.sName);
DBMS_OUTPUT.put_line ('find the age: '||rowData.SAGE);
DBMS_OUTPUT.put_line ('find the email: '||rowData.sEmail);
DBMS_OUTPUT.put_line ('find the phone: '||rowData.sPhone);
DBMS_OUTPUT.put_line ('find the address: '||rowData.sAddress);
END;
結果：
find the name: Jack find the age: 22 find the email: dfdf@qq.com find the phone: 2134343 find the address: Singapore PL/SQL procedure successfully completed.
關於Type的用法，查看
http://blog.csdn.net/chen_linbo/article/details/6367871
2， 查看姓名包含rose的信息（包含多條記錄）。
set serveroutput on;
DECLARE
cursor name_rose_cur is
select sName from student where upper(sName) like upper('%rose%');
l_name student.sName%TYPE;
BEGIN
open name_rose_cur;
Loop
fetch name_rose_cur into l_name;
exit when name_rose_cur%NOTFOUND;
DBMS_OUTPUT.put_line ('find the name: '||l_name);
end loop;
close name_rose_cur;
END;
結果:
find the name: Rose find the name: rose1 find the name: rose2 find the name: rose4 PL/SQL procedure successfully completed.
同樣的功能可以用For循環來實現。
set serveroutput on;
DECLARE
cursor name_rose_cur is
select * from student where upper(sName) like upper('%rose%');
BEGIN
for student_cur
in name_rose_cur
Loop
DBMS_OUTPUT.put_line ('find the name: '||student_cur.sName);
end loop;
END;
這里的結果跟上面是一樣的。
Oracle 水很深，希望再接再厲.