begin
select user_numberchr(9)user_num into v_tmp
from
(select user_number,user_num,rownum row_id
from okcai_1
where user_id = p_userId) a
where row_id = p_col;
return ltrim(v_tmp);
--return v_tmp;
end;
然后
select distinct user_id,get_col(user_id,1),get_col(user_id,2),get_col(user_id,3) .... from okcai_1
方式二：
create or replace function get_col(
p_userId number,
p_col number
) return varchar
as
v_tmp varchar2(255);
begin
select user_numberchr(9)user_num into v_tmp
from
(select user_number,user_num,rownum row_id
from okcai_1
where user_id = p_userId) a
where row_id = p_col;
return ltrim(v_tmp);
--return v_tmp;
end;
select distinct user_id,get_col_new(user_id) from okcai_1;
49.怎么设置存储过程的调用者权限
普通存储过程都是所有者权限，如果想设置调用者权限，请参考如下语句
create or replace
procedure ...()
AUTHID CURRENT_USER
As
begin
...
end;
50.Oracle有哪些常见关键字
详细信息可以查看v$reserved_words视图
51.怎么查看数据库参数
<1> show parameter 参数名
如通过show parameter spfile可以查看9i是否使用spfile文件
其中参数名是可以匹配的。
比如show parameter cursor ,则会显示跟cursor相关的参数
<2>
select * from v$parameter
<3>
除了这部分参数，Oracle还有大量隐含参数，可以通过如下语句查看:
SELECT NAME
,VALUE
,decode(isdefault, 'TRUE','Y','N') as "Default"
,decode(ISEM,'TRUE','Y','N') as SesMod
,decode(ISYM,'IMMEDIATE', 'I',
'DEFERRED', 'D',
'FALSE', 'N') as SysMod
,decode(IMOD,'MODIFIED','U',
'SYS_MODIFIED','S','N') as Modified
,decode(IADJ,'TRUE','Y','N') as Adjusted
,description
FROM ( --GV$SYSTEM_PARAMETER
SELECT x.inst_id as instance
,x.indx+1
,ksppinm as NAME
,ksppity
,ksppstvl as VALUE
,ksppstdf as isdefault
,decode(bitand(ksppiflg/256,1),1,'TRUE','FALSE') as ISEM
,decode(bitand(ksppiflg/65536,3),
1,'IMMEDIATE',2,'DEFERRED','FALSE') as ISYM
,decode(bitand(ksppstvf,7),1,'MODIFIED','FALSE') as IMOD
,decode(bitand(ksppstvf,2),2,'TRUE','FALSE') as IADJ
,ksppdesc as DESCRIPTION
FROM x$ksppi x
,x$ksppsv y
WHERE x.indx = y.indx
AND substr(ksppinm,1,1) = '_'
AND x.inst_id = USERENV('Instance')
)
ORDER BY NAME
52.怎样建立基于函数索引
8i以上版本，确保
Query_rewrite_enabled=true
Query_rewrite_integrity=trusted
Compatible=8.1.0以上
Create index indexname on table (function(field));
53.怎么样移动表或表分区
[A]移动表的语法
Alter table tablename move
[Tablespace new_name
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