SQL ֪ʶ
--------------------------------²éѯϵͳ¿âÖÐÊÇ·ñÓп⣨Óпâ¾Íɾ³ý´Ë¿â£©----------------------------------------------------
use master
if exists(select * from databases where name='¿âÃû')
drop database ¿âÃû
__________________________ ½¨Êý¾Ý¿â½¨±íµÄ»ù±¾¸ñʽ ___________________________________________
create database ¿âÃû
on primary
(name='student1',filename='·¾¶\student1.mdf',size=10mb, filegrowth=15%), Ö÷Îļþ
(name='student2',filename='·¾¶\student2.ndf',size=10mb, filegrowth=15%) ´ËÎļþ
log on
(name='student1_log',filename='·¾¶\student1.ldf',size=1mb,filegrowth=15%,maxsize=300mb), ÈÕÖ¾Îļþ
(name='student2_log',filename='·¾¶\student2.ldf',size=1mb,filegrowth=15%,maxsize=300mb)
go
use ¿âÃû
create table ±íÃû
(ÁÐÃû1 Êý¾ÝÀàÐÍ Ö÷¼ü ÊÇ·ñÔö³¤ Ψһ ĬÈÏ ÊÇ·ñΪ¿Õ£¬
name varchar primary key identity(±íʾÖÖ×Ó£¬Ôö³¤Á¿) unique default not null,
)
-------------------------½¨Êý¾Ý¿â±íÖ®¼äµÄÔ¼Êø-------------------------------------------------------
alter table kk add
df ĬÈÏ constraint df_sex default(nan) for sex
pk Ö÷¼ü constraint pk_ÁÐÃû primary key(ÁÐÃû)
ck ¼ì²é constraint ck_ÁÐÃû check(len(ÁÐÃû)>=6)
constraint ck_ÁÐÃû check(ÁÐÃû like [email='%@%']'%@%'[/email])
fk Ö÷Íâ¼ü constraint fk_Íâ¼üÁÐÃû foreign key(Íâ¼üÁÐÃû) references Ö÷±íÃû£¨Ö÷±íÁУ©
uq Ψһ
Ïà¹ØÎĵµ£º
SQLPlus :http://www.orafaq.com/wiki/SQL*Plus_FAQ
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14261/sqloperations.htm
1. Transfer values from a sql scripts:
CNT=`sqlplus -s username/password1@dbname @getUVQuery_NULLCNT`;
Note : Remeber to use o ......
CREATE proc page
@RecordCount int output,
@QueryStr nvarchar(100)='table1',--±íÃû¡¢ÊÓͼÃû¡¢²éѯÓï¾ä
@PageSize int=20, --ÿҳµÄ´óС(ÐÐÊý)
@PageCurrent int=2, --ÒªÏÔʾµÄÒ³ ´Ó0¿ªÊ¼
@FdShow nvarchar (1000)='*', --ÒªÏÔʾµÄ×Ö¶ÎÁбí
@IdentityStr nvarchar (100)='id', --Ö÷¼ü
@WhereStr nvarchar ......
×Ö·ûÀàÐÍ£º
CHAR(size)£º¹Ì¶¨³¤¶È×Ö·û´®£¬×î´ó³¤¶È2000 bytes
VARCHAR2(size)£º¿É±ä³¤¶ÈµÄ×Ö·û´®£¬×î´ó³¤¶È4000 bytes£¬¿É×öË÷ÒýµÄ×î´ó³¤¶È749
NCHAR(size)£º¸ù¾Ý×Ö·û¼¯¶ø¶¨µÄ¹Ì¶¨³¤¶È×Ö·û´®£¬×î´ó³¤¶È2000 bytes
NVARCHAR2(size)£º¸ù¾Ý×Ö·û¼¯¶ø¶¨µÄ¿É±ä³¤¶È×Ö·û´®£¬×î´ó³¤¶È4000 byte
LONG£º±ä³¤µÄ×Ö·û´®£¬×î´ó³¤¶ÈÏÞ ......
ÒªÇó£º °´ lct1£¬ lct2 ÅÅÐòºóµÄÇ°Á½Ìõ¼Í¼£¬ÏÔʾΪÏÂÁнá¹û£º
item_cd1 item_cd2 lct
01 a   ......
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SQL·ÖÀࣺ
DDL—Êý¾Ý¶¨ÒåÓïÑÔ(CREATE£¬ALTER£¬DROP£¬DECLARE)
DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK) Ê×ÏÈ,¼òÒª½éÉÜ»ù´¡Óï¾ä£º
1¡¢ËµÃ÷£º´´½¨Êý¾Ý¿â
CREATE ......