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½ñÌì×°ÁËOracle SQL developer

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AddVMOption -Duser.language=en
AddVMOption -Duser.country=US
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oracle sql ʱ¼ä¼ä¸ô¼ÆËã

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select f_date,f_cstime,f_cetime, (((SYSDATE- TO_DATE(f_date||f_cstime,'YYYYMMDDHH24MISS')) * 86400000)-((SYSDATE- TO_DATE(f_date||f_cetime,'YYYYMMDDHH24MISS')) * 86400000))/1000  CURRENT_MILLI from ycsq_t_hauthlog where f_cstime<>'999999'
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SYSDATE- TO_DATE(f_date||f_cstime,'YYYYMMDDHH24MISS')*86400000 ת»»³ÉºÁÃë ......

oracle sql ʱ¼ä¼ä¸ô¼ÆËã

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select f_date,f_cstime,f_cetime, (((SYSDATE- TO_DATE(f_date||f_cstime,'YYYYMMDDHH24MISS')) * 86400000)-((SYSDATE- TO_DATE(f_date||f_cetime,'YYYYMMDDHH24MISS')) * 86400000))/1000  CURRENT_MILLI from ycsq_t_hauthlog where f_cstime<>'999999'
½«×Ö·û´®×ª»»³ÉÈÕÆÚÀà:SYSDATE- TO_DATE(f_date||f_cstime,'YYYYMMDDHH24MISS'),
SYSDATE- TO_DATE(f_date||f_cstime,'YYYYMMDDHH24MISS')*86400000 ת»»³ÉºÁÃë ......

£¨×îгɹ¦£©Ãâ°²×°OracleÔËÐÐpl/sql developer

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11.1.0.7.0 °æµÄ¼´Ê±¿Í»§¶Ë³ÌÐò°ü — Basic£¨²»ÊÇBasic Lite£©
2.½«ÏÂÔص½µÄÎļþ½âѹ£¬½âѹºóÎÒ½«Ä¿Â¼instantclient_11_1ÀïµÄÈ«²¿Îļþ¿½±´µ½ÁËÒ»¸öеÄĿ¼£ºE:\programs\OracleClient¡£ÄãÒ²¿ÉÒÔ²»¿½±´£¬Ö±½ÓʹÓýâѹºóµÄĿ¼Ãû¡£
3.´´½¨Îļþtnsnames.ora£¬ÄÚÈÝÈçÏ£º 
APP =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 172.22.22.6)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = app)
    )
  )
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4.ÉèÖÃpl/sql DeveloperµÄperference¡£½«OracleµÄConnectionÀïµÄOracleÖ÷Ŀ¼ÉèÖÃΪÔÚµÚ2²½ÀïÉèÖõÄĿ¼£¬ÎÒµÄÊÇ£ºE:\programs\OracleClient£¬Í¬Ê±½«OCI¿âÉèÖÃΪE:\programs\OracleClient\oci.dll
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2.½«ÏÂÔص½µÄÎļþ½âѹ£¬½âѹºóÎÒ½«Ä¿Â¼instantclient_11_1ÀïµÄÈ«²¿Îļþ¿½±´µ½ÁËÒ»¸öеÄĿ¼£ºE:\programs\OracleClient¡£ÄãÒ²¿ÉÒÔ²»¿½±´£¬Ö±½ÓʹÓýâѹºóµÄĿ¼Ãû¡£
3.´´½¨Îļþtnsnames.ora£¬ÄÚÈÝÈçÏ£º 
APP =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 172.22.22.6)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = app)
    )
  )
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4.ÉèÖÃpl/sql DeveloperµÄperference¡£½«OracleµÄConnectionÀïµÄOracleÖ÷Ŀ¼ÉèÖÃΪÔÚµÚ2²½ÀïÉèÖõÄĿ¼£¬ÎÒµÄÊÇ£ºE:\programs\OracleClient£¬Í¬Ê±½«OCI¿âÉèÖÃΪE:\programs\OracleClient\oci.dll
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Oracle¶¯Ì¬SQLÓï¾ä


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loadCommand.CommandType = CommandType.Text
   loadCommand.CommandText = "Select * from Users"
   dataAdapter .SelectCommand = loadCommand
   dataAdapter . Fill(data)
   dataAdapter .SelectCommand = loadCommand
   dataAdapter . Fill(data)
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loadCommand.CommandType = CommandType.Text
   loadCommand.CommandText = "Select * from Users"
   dataAdapter .SelectCommand = loadCommand
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PROCEDURE G_Search(P_YearNO      IN NUMBER,
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[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Ò»)--sum()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(¶þ)--max()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Èý)--row_number() /rank()/dense_rank()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(ËÄ)--lag()/lead()
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1.´´½¨ÑÝʾ±í
create table emp
as
select * from scott.emp;
alter table emp
add constraint emp_pk
primary key(empno);
create table dept
as
select * from scott.dept;
alter table dept
add constraint dept_pk
primary key(deptno);
2. sum()Óï¾äÈçÏ£º
select deptno,
       ename,
       sal,
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       sum(sal) over (partition by deptno order by sal) ......

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[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Ò»)--sum()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(¶þ)--max()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Èý)--row_number() /rank()/dense_rank()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(ËÄ)--lag()/lead()
ʵ¼ÊÓ¦ÓÃÖÐÎÒÃÇ¿ÉÒÔͨ¹ýsum()ͳ¼Æ³ö×éÖеÄ×ܼƻòÕßÊÇÀÛ¼ÓÖµ£¬¾ßÌåʾÀýÈçÏ£º
1.´´½¨ÑÝʾ±í
create table emp
as
select * from scott.emp;
alter table emp
add constraint emp_pk
primary key(empno);
create table dept
as
select * from scott.dept;
alter table dept
add constraint dept_pk
primary key(deptno);
2. sum()Óï¾äÈçÏ£º
select deptno,
       ename,
       sal,
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       sum(sal) over (partition by deptno order by sal) ......

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[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Ò»)--sum()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(¶þ)--max()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Èý)--row_number() /rank()/dense_rank()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(ËÄ)--lag()/lead()
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ÏÈ´´½¨Ê¾Àý±í
create table emp
as
select * from scott.emp;
alter table emp
add constraint emp_pk
primary key(empno);
create table dept
as
select * from scott.dept;
alter table dept
add constraint dept_pk
primary key(deptno);
·½·¨1.empÖеÄÿһÐж¼»á½øÐÐmax±È½Ï£¬·Ñʱ
select * from emp emp1 where emp1.sal=(select max(emp2.sal) from emp emp2 where emp2.deptno=emp1.deptno)
·½·¨2.ÏÈ×Ó²éѯ²éÕÒ³ömax sal£¬È»ºóÓëemp±íÏà¹ØÁª£¬Èç¹ûÂß¼­¸´ÔÓ»á²úÉú½Ï¶à´úÂë
   select * from emp emp1,(select de ......

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[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Ò»)--sum()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(¶þ)--max()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(Èý)--row_number() /rank()/dense_rank()
[Oracle]¸ßЧµÄSQLÓï¾äÖ®·ÖÎöº¯Êý(ËÄ)--lag()/lead()
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ÏÈ´´½¨Ê¾Àý±í
create table emp
as
select * from scott.emp;
alter table emp
add constraint emp_pk
primary key(empno);
create table dept
as
select * from scott.dept;
alter table dept
add constraint dept_pk
primary key(deptno);
·½·¨1.empÖеÄÿһÐж¼»á½øÐÐmax±È½Ï£¬·Ñʱ
select * from emp emp1 where emp1.sal=(select max(emp2.sal) from emp emp2 where emp2.deptno=emp1.deptno)
·½·¨2.ÏÈ×Ó²éѯ²éÕÒ³ömax sal£¬È»ºóÓëemp±íÏà¹ØÁª£¬Èç¹ûÂß¼­¸´ÔÓ»á²úÉú½Ï¶à´úÂë
   select * from emp emp1,(select de ......
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