sql×ܽá
1.´´½¨Êý¾Ý¿â
--exec xp_cmdshell 'mkdir d:\project'--µ÷ÓÃDOSÃüÁî´´½¨Îļþ¼Ð£¬Ê¹Óô˾äÐèÒªÆô¶¯SQLµÄÍâΧ¹¤¾ß
if exists(select * from sysdatabases where name='Êý¾Ý¿âÃû')
drop database Êý¾Ý¿âÃû
set nocount on --È¡ÏûÊÜÓ°ÏìÐÐÊý
create database Êý¾Ý¿âÃû
on
(
name='',
filename='',-- .mdf .ldf
size=10mb,
maxsize=
filename= --Êý¾Ý¿â´óСÔö³¤Á¿
)
log on
(
)
go
use Êý¾Ý¿âÃû
--´´½¨µÇ¼Óû§
exec sp_addlogin 'Óû§Ãû','ÃÜÂë'
--È¥µôÊÜÓ°ÏìÐÐÊý
set nocount on
exec sp_grantdbaccess 'adminMaster','adminMaster'
--ÉèÖÃÓû§¶Ô±íµÄȨÏÞ
grant select,delete,update on bbstopic to Óû§Ãû
2.´´½¨±í¼°Ìí¼ÓÔ¼Êø
create table ±í
(
)
alter table ±í add
constraint Ô¼ÊøÃû primary key(ÁÐÃû) --Ö÷¼üÔ¼Êø identity
constraint Ô¼ÊøÃû check(len(ÁÐÃû)) --checkÔ¼Êø
constraint Ô¼ÊøÃû unique(ÁÐÃû) --Î¨Ò»Ô¼Êø
constraint Ô¼ÊøÃû default(ĬÈÏÄÚÈÝ) for ÁÐÃû
constraint Ô¼ÊøÃû foreign key(Íâ¼üÃû)
references Ö÷¼üÊý¾Ý¿âÃû(Ö÷¼üÃû)
ck£ºcheckÔ¼Êø
fk£ºÍâ¼üÔ¼Êø
df£ºdefaultĬÈÏ
×¢£ºalter ¸Ä±ä, ¸ü¸Ä
add ¼ÓÈ룬 Ôö¼Ó, Ìí¼Ó
constraint Ç¿ÖÆ£¬ÏÞÖÆ, Ô¼Êø
foreign key Íâ¼ü
references ÒýÓÃ
3.sqlÖеĹؼü×Ö£º
sysdatabases ×Ü¿â
exists ÅжÏÊÇ·ñ´æÔÚ
Ïà¹ØÎĵµ£º
1.Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò(Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ)¡¡¡¡
¡¡¡¡ SQLSERVERµÄ½âÎöÆ÷°´ÕÕ´ÓÓÒµ½×óµÄ˳Ðò´¦Àífrom×Ó¾äÖеıíÃû£¬Òò´Ëfrom×Ó¾äÖÐдÔÚ×îºóµÄ±í£¨»ù´¡±ídriving table£©½«±»×îÏÈ´¦Àí£¬ÔÚfrom×Ó¾äÖаüº¬¶à¸ö±íµÄÇé¿öÏ£¬±ØÐëÑ¡Ôñ¼Ç¼ÌõÊý×îÉٵıí×÷Ϊ»ù´¡±í£¬µ±SQLSERVER´¦Àí¶à¸ö±íʱ£¬»áÔËÓÃÅÅÐò¼°ºÏ²¢µÄ·½Ê½Á ......
ÓÃPL/SQL Deleveloperµ¼³öcsvÎļþ¸ñʽÊý¾Ý£¬ÓÃexcel´ò¿ªÊÇÂÒÂ룬ÓüÇʱ¾´ò¿ªÕý³££¬Ôõô»ØÊ£¿
ÂíÉÏGoogle£¬ÔÀ´µ¼³öµÄÎļþµÄ±àÂë¸ñʽÊÇUTF-8ºÍ¶øexcelĬÈÏ´ò¿ªÎļþµÄ±àÂëÊÇunicode£¬ÓÚÊÇ£º
1¡¢ÓüÇʱ¾´ò¿ªÎļþ£¬È»ºóÁí´æÎª£¬ÌîдÎļþÃû£¬Ñ¡Ôñ±àÂë¸ñʽΪunicode
2¡¢ÓÃexcel´ò¿ªÐµÄÎļþ£¬Õý³£ÏÔʾ
µ«ÊdzöÏÖÁíÍâµÄÎÊÌ⣠......
Oracle ¶¯Ì¬SQL·µ»Øµ¥Ìõ½á¹ûºÍ½á¹û¼¯
1. DDL ºÍ DML
/**//*** DDL ***/
begin
EXECUTE IMMEDIATE 'drop table temp_1';
EXECUTE IMMEDIATE 'create table temp_1(name varchar2(8))';
end;
/**//*** DML ***/
declare
v_1 varchar2(8);
& ......
×ö¿ª·¢¹ý³ÌÖУ¬¾³£»áÓõ½½«ExcelÖÐÊý¾Ýµ¼³öµ½SQL ServerÖеÄÇé¿ö£¬Äã¿ÉÒÔÀûÓÃSQL SERVER ÖÐ×Ô´øµÄµ¼ÈëÊý¾ÝµÄ·½Ê½£¬µ«ÕâÖÖ·½Ê½£¬ÓÐʱ»á·¢ÏÖÊý¾Ýµ¼Èëºó£¬¿ÉÄÜΪ¿Õ£¬¿ÉÄÜ¿ªÍ·ÉÙ¸öÁ㣬´ËÖÖÇé¿ö¶à³öÏÖÓÚÊýÖµÐ͵ÄÁУ¬½ñÌìÔÚCSDNÉÏÏй䣬ż¶û·¢ÏÖÁËÒ»¸öÌû×Ó£¬½éÉܵÄÒÔÏÂÕâÖÖ·½·¨£¬±¾ÈËÇ¡ÆßÒò×î½ü¹«Ë¾×¼±¸ÉÏÊУ¬É󼯾ÖÔÚ×öÉ󼯣¬¼¼ ......
1.ÈçºÎ´´½¨Êý¾Ý¿â
CREATE DATABASE student
2.ÈçºÎɾ³ýÊý¾Ý¿â
DROP DATABASE student
3.ÈçºÎ±¸·ÝÊý¾Ý¿âµ½´ÅÅÌÎļþ
BACKUP DATABASE student to disk=´c:S4.bak´
4.ÈçºÎ´Ó´ÅÅÌÎļþ»¹ÔÊý¾Ý¿â
RESTORE DATABASE studnet from DISK = ´c:S4.bak´
5.ÔõÑù´´½¨±í£¿
CREATE TABLE Students (
&n ......