在Oracle 8i中将字符串拆分为多行

时间:2016-02-03 07:03:05

标签: sql oracle oracle8i

我有一个表格,其中包含以逗号分隔的名称列表。我的目标是将它们分开。

Room  | Name  
room1 | Anne,Amy  
room2 | Ben,Bryan

我的目标:

Room  | Name  
room1 | Anne   
room1 | Amy   
room2 | Ben  
room2 | Bryan  

我已经阅读了一些关于如何将字符串拆分为行的解决方案,但是有替代方法可以在Oracle 8i上运行。我已经按照一些文章将它们拆分成这样的行:

create or replace function str2tbl( p_str IN varchar2 , p_delimiter in varchar2) return mytabletype
  as
    l_str      long default p_str || p_delimiter;
    l_n       number;
    l_data   mytabletype := mytabletype();
  begin
  loop
    l_n := instr( l_str, p_delimiter );
    exit when (nvl(l_n,0) = 0);
    l_data.extend;
    l_data( l_data.count ) := ltrim(rtrim(substr(l_str,1,l_n-1)));
    l_str := substr( l_str, l_n+1 );
  end loop;
   return l_data;
  end str2tbl;

然后我从我的桌子做一个SELECT,如下所示:

select * from the ( select cast(str2tbl( Name, ',' ) as mytableType ) 
from   SPLITSTRING);

并获得了以下结果,但无法显示Room列的值:

Name  
Anne  
Amy  
Ben  
Bryan  

有没有办法在Oracle 8i中拆分行?

3 个答案:

答案 0 :(得分:1)

您可以通过hierarchical queries和字符串操作函数尝试使用稍微不同的方法,无需函数。 有点棘手,但这应该有效:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior">

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="256dp"
    android:fitsSystemWindows="true"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsingToolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        app:contentScrim="?attr/colorPrimary"
        app:expandedTitleMarginEnd="64dp"
        app:expandedTitleMarginStart="16dp"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

           <!-- This is the image you want to add -->

        <ImageView
            android:id="@+id/iv"
            android:layout_width="match_parent"
            android:fitsSystemWindows="true"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            app:layout_collapseMode="parallax" />

           <!-- Toolbar to just hold the action icons -->

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:layout_collapseMode="pin"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

    </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>

           <!-- Nested scroll to make the content under the bar scrolls and move up and down the collapsing toolbar -->

<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

           <!-- YOUR CONTENT -->

    <include layout="@layout/content_detail" />

</android.support.v4.widget.NestedScrollView>

答案 1 :(得分:0)

我不确定8i是否支持这种功能,我已经在12c中对此进行了测试,并且工作正常:

create table test (room varchar2(20), names varchar2(40));

表&#39;测试&#39;创建

insert into test values ('room1', 'anne');

INSERT INTO测试成功 1行受影响

insert into test values ('room2', 'amy,sheldon');

INSERT INTO测试成功 1行受影响

insert into test values ('room3', 'penny,leonard');

INSERT INTO测试成功 1行受影响

使用XMLTABLE:

SELECT room,
trim(COLUMN_VALUE) names
FROM test,
xmltable(('"'
|| REPLACE(names, ',', '","')
|| '"'))
/

房间| NAMES

room1 |安

room2 |艾米

room2 |谢尔顿

room3 |便士

room3 |伦纳德

答案 2 :(得分:0)

这是一种不使用connect by

的替代方法
drop table pivot_t;
drop table rooms;

create table rooms (Room varchar2(30), Persons varchar2(30));

insert into rooms values ('room1',  'Anne,Amy');
insert into rooms values ('room2',  'Ben,Bryan,Paul');
insert into rooms values ('room3',  'John,Michael,Nik,Patrick');

create table pivot_t(num integer);

begin
for i in 1..10000 loop
 insert into pivot_t values(i);
end loop;
end;
/

commit;



select 
room
,substr(Persons, start_pos, case
  when 
    next_comma - start_pos < 0 then 999
  else 
    next_comma - start_pos 
end)
from
(
select r.room 
      ,r.persons
      ,nvl(instr(r.Persons,',',1,decode(pt.num-1,0,null,pt.num-1) ),0) +1 START_POS
      ,instr(r.Persons,',',1,pt.num) NEXT_COMMA
  from rooms   r
      ,pivot_t pt
where length(r.Persons) - length(replace(r.Persons,',')) +1 >= pt.num
order by r.room, pt.num
)
;