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ORACLE PL/SQL ¼¯ºÏѧϰ±Ê¼Ç(¶þ)

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1¡¢½«Ç¶Ì×±í¶¨ÒåΪPL/SQLµÄ³ÌÐò¹¹Ôì¿é
 
TYPE type_name IS TABLE OF element_type[NOT NULL];
 
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DECLARE

-- Define a nested table of variable length strings.
TYPE card_table IS TABLE OF VARCHAR2(5 CHAR);

-- Declare and initialize a nested table with three rows.
cards CARD_TABLE := card_table(NULL,NULL,NULL);
BEGIN

-- Print title.
dbms_output.put_line(
'Nested table initialized as nulls.');
dbms_output.put_line(
'----------------------------------');

-- Loop through the three records.
FOR i IN 1..3 LOOP

-- Print the contents.
dbms_output.put ('Cards Varray ['||i||'] ');
dbms_output.put_line('['||cards(i)||']');

END LOOP;

-- Assign values to subscripted members of the varray.
cards(1) := 'Ace';
cards(2) := 'Two';
cards(3) := 'Three';

-- Print title.
dbms_output.put (CHR(10)); -- Visual line break.
dbms_output.put_line(
'Nested table initialized as Ace, Two and Three.');
dbms_output.put_line(
'-----------------------------------------------');

-- Loop through the three records to print the varray contents.
FOR i IN 1..3 LOOP

dbms_output.put_line('Cards ['||i||'] '
|| '['||cards(i)||']');

END LOOP;
END;
/
 
 
2¡¢½«Ç¶Ì×±íÀàÐͶ¨ÒåºÍÓÃ×÷PL/SQLµÄ¶ÔÏóÀàÐÍ
CREATE OR REPLACE TYPE type_name
AS TABLE OF element_type [NOT NULL];
 
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-- Define a varray of four rows of variable length strings.
CREATE OR REPLACE TYPE card_unit_varray
AS VARRAY(13) OF VARCHAR2(5 CHAR);
/

-- Define a varray of four rows of variable length strings.
CREATE OR REPLACE TYPE card_suit_varray
AS VARRAY(4) OF VARCHAR2(8 CHAR);
/

-- Define a table of variable length strings.
CREATE OR REPLACE TYPE card_deck_table
AS TABLE OF VARCHAR2(17 CHAR);
/

DECLARE

-- Define a counter to manage 1 to 52 cards in a deck.
counter INTEGER


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Oracle´æ´¢¹ý³ÌµÄÖ´ÐÐ

declare
msg varchar(1000);    --¶¨ÒåÒ»¸ö±äÁ¿ÓÃÓÚÏÔʾ´«³öµÄÐÅÏ¢
begin
PRO_TACCOUNT_RECOUNT ('B9D2B59A955541298D59EA8C35668CFD',msg);   --Ö´Ðд洢¹ý³Ì
dbms_output.put_line(msg);   --Êä³ö±äÁ¿
end; ......

OracleÓÃimpºÍexpʵÏÖÊý¾ÝµÄµ¼ÈëºÍµ¼³ö

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Exp
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Fullģʽ---µ¼³ö
Õû¸öÊý¾Ý¿â
Userģʽ---µ¼³ö
Ö¸¶¨µÄÓû§
Tableģʽ—µ¼³ö
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Tablespaceģʽ—µ¼³ö
±í
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Exp
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OWNERÖ¸¶¨Òªµ¼³ö
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FULL=y±íʾҪµ¼³ö
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TablesÖ¸¶¨Òªµ¼³ö
µÄ±í
TablepacesÖ¸¶¨Òªµ¼³ö
µÄ±í ......

Oracle MTS

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¡¡¡¡MTS = Multi-Threaded ServerMTSÊÇORACLE SERVERµÄÒ»¸ö¿ÉÑ¡µÄÅäÖÃÑ¡Ôñ£¬ÊÇÏà¶ÔDEDICATE·½Ê½¶øÑÔ£¬Ëü×î´óµÄÓŵãÊÇÔÚÒÔ²»ÓÃÔö¼ÓÎïÀí×ÊÔ´(ÄÚ´æ)µÄÇ°ÌáÏÂÖ§³Ö¸ü¶àµÄ²¢·¢µÄÁ¬½Ó¡£Joseph C.JohnsonÒԲ͹ݸø³öÒ»¸öMTSµÄÐÎÏóµÄ±ÈÓ÷
¡¡¡¡¼ÙÉèORACLEÊÇÒ»¼Ò²Í¹Ý£¬µ±Äã×ß½øÒ»¼Ò²Í¹ÝʱÄã¸Ð¾õ×îÊæ·þµÄ·þÎñ·½Ê½¾ÍÊ ......

OracleÊý¾Ý¿â±¸·Ý¼¼ÇÉ

¡¡¡¡oracle% sqlplus /nolog
¡¡¡¡SQL> conn / as sysdba
¡¡¡¡Êý¾Ý¿âµÄÎïÀíÎļþ
¡¡¡¡Êý¾ÝÎļþ
¡¡¡¡select file_name from dba_data_files;
¡¡¡¡¿ØÖÆÎļþ
¡¡¡¡select name from v$controlfile;
¡¡¡¡ÈÕÖ¾Îļþ
¡¡¡¡select member from v$logfile;
¡¡¡¡---------------------------------------------------------
......

Oracle³£ÓÃSQLÓï¾ä(PL/SQL developer¹¤¾ßϵÄ)

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create table users(
id number(4) primary key,
username varchar2(10),
password varchar2(10)
)
²éѯ±í²¢½âËø±í(¼´¿ÉÒÔµã»÷ÊäÈë¿òÏÂÃæµÄ"Ëø"ͼ±ê¹¤¾ß, ¼´"Edit data")
select * from users for update
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alter table mobilephone drop column mobiletype
תÔØ
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