Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

PL/SQLÀý×Ó2

create or replace procedure c
(
v_deptno  in emp.deptno%type,
v_max out emp.sal%type
)
as
begin
select max(sal+nvl(comm,0)) into v_max from emp where deptno=v_deptno;
end;
create or replace procedure cc
(
v_empno  in emp.empno%type,
v_sal out emp.sal%type,
v_comm out emp.comm%type,
v_tol out emp.sal%type
)
as
begin
select sal,nvl(comm,0),(sal+nvl(comm,0)) into v_sal,v_comm,v_tol from emp where
empno=v_empno;
end;
create or replace procedure upsal
(
v_deptno in number,
v_sal in number
)
as
begin
update emp set sal=v_sal where deptno=v_deptno;
end;
create or replace procedure somsal
(
v_empno in number,
v_sal in number
)
as
begin
update emp set sal=v_sal where empno=v_empno;
end;
create or replace function maxsal
(
v_deptno in number
)
return number
is
v_maxsal number;
begin
select max(sal) into v_maxsal from emp where deptno=v_deptno;
return v_maxsal;
end;
create or replace procedure cursor
(v_cursor out mypack.mycursor
)
is
begin
open v_cursor for select * from emp ;
end ;
create or replace function selalldep
(a out number,
c in number
)
return number
as
b number;
begin
select count(empno),sum(sal+nvl(comm,0)) into a,b from emp
where deptno=c;
return b;
end;
create or replace package mypack is
type mycursor is ref cursor;
end ;
declare
i number(3):=1;
j number(3):=2;
begin
loop
insert into t_user values(i,'a'||i,'a'||i,1,to_date('2007-01-01','yyyy-mm-dd'),1,i,'sdd');
insert into t_user values(j,'a'||j,'a'||j,1,to_date('2007-01-01','yyyy-mm-dd'),2,j,'sdd');
i:=i+2;
j:=j+2;
exit when i>600 and j>600;
end loop;
end;


Ïà¹ØÎĵµ£º

SQL Server Êý¾Ý¿â

a.Êý¾Ý¿â»ù´¡
      i.¸ÅÄ±í¼°Ïà¹Ø²Ù×÷¶ÔÏóµÄ¼¯ºÏ£¨Ö÷Êý¾ÝÎļþmdf£¬¶þ¼¶Êý¾ÝÎļþndf£¬ÈÕÖ¾ldf£©
      ii.×é³É£ºÏµÍ³£º master(¼Ç¼ÁËËùÓеķþÎñÆ÷ϵͳÐÅÏ¢)
,model£¨¼Ç¼ÁËËùÓÐÁÙʱ¼Ç¼£¬Á´½Ó¶Ï¿ªÊ±£¬Êý¾Ý¶ªÊ§£©
Tempdb£¨Êý¾ÝÄ£°å¿â£¬º¬´´½¨¿âʱµÄȱʡÊý¾Ý£©
, ......

SQL²éѯÂýµÄ48¸öÔ­Òò·ÖÎö


²éѯËÙ¶ÈÂýµÄÔ­ÒòºÜ¶à£¬³£¼ûÈçϼ¸ÖÖ£º 
¡¡¡¡1¡¢Ã»ÓÐË÷Òý»òÕßûÓÐÓõ½Ë÷Òý(ÕâÊDzéѯÂý×î³£¼ûµÄÎÊÌ⣬ÊdzÌÐòÉè¼ÆµÄȱÏÝ) 
¡¡¡¡2¡¢I/OÍÌÍÂÁ¿Ð¡£¬ÐγÉÁËÆ¿¾±Ð§Ó¦¡£ 
¡¡¡¡3¡¢Ã»Óд´½¨¼ÆËãÁе¼Ö²éѯ²»ÓÅ»¯¡£ 
¡¡¡¡4¡¢ÄÚ´æ²»×ã 
¡¡¡¡5¡¢ÍøÂçËÙ¶ÈÂý 
¡¡¡¡6¡¢²éѯ³öµÄÊý¾ÝÁ¿¹ý´ó(¿ÉÒÔ²ÉÓöà ......

oracle³£Óþ­µäSQL²éѯ

oracle³£Óþ­µäSQL²éѯ
³£ÓÃSQL²éѯ£º
 
1¡¢²é¿´±í¿Õ¼äµÄÃû³Æ¼°´óС
 
select t.tablespace_name, round(sum(bytes/(1024*1024)),0) ts_size
from dba_tablespaces t, dba_data_files d
where t.tablespace_name = d.tablespace_name
group by t.tablespace_name;
 
2¡¢²é¿´±í¿Õ¼äÎïÀíÎļþµÄÃû³Æ ......

SQL³£ÓÃÈÕÆÚʱ¼ä´¦Àíº¯Êý

×î½üÔÚÔÚÒ»µçÁ¦ÏµÍ³£¬ÀïÃæÓõ½±¨±í£¬¾­³£ÐèÒª¶ÔSQLÈÕÆÚ½øÐвÙ×÷¡£ÏÖÔÚ½«Ò»Ð©³£ÓõÄSQLÈÕÆÚ²Ù×÷º¯Êý¼ÇÏÂ
/**//**//**//* datepart()º¯ÊýµÄʹÓà                     ¡¡¡¡
* datepart()º¯Êý¿ÉÒÔ·½±ãµÄÈ¡µ ......

SQL²Ù×÷È«¼¯


ÏÂÁÐÓï¾ä²¿·ÖÊÇMssqlÓï¾ä£¬²»¿ÉÒÔÔÚaccessÖÐʹÓá£
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 DATABASE da ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ