其实这样的问题已经有很多人提过了,而恰恰在csdn都能搜索到的。
--创建可以返回纪录集的函数(不传入表名参数)
SQL> create or replace function testrerecordnotabname (tableid in number)
2 return mytabletype
3 as
4 l_data mytabletype :=mytabletype();
5 begin
6 for i in (select * from a where id>=tableid) loop
7 l_data.extend;
8 l_data(l_data.count) := myobjectype(i.id,i.doctime,i.name);
9 exit when i.id = 62;
10 end loop;
11 return l_data;
12 end;
13 /Function created.SQL> commit;Commit complete.--创建可以返回纪录集的函数(可以传入表名参数)
SQL> create or replace function testrerecordtabname (tablename in varchar2,tableid in number)
2 return mytabletype
3 as
4 l_data mytabletype :=mytabletype();
5 strsql varchar2(50);
6 type v_cursor is ref cursor;
7 v_tempcursor v_cursor;
8 i1 number;
9 i2 varchar2(50);
10 i3 date;
11 begin
12 strsql := 'select * from ' || tablename || ' where id>=' || tableid;
13 open v_tempcursor for strsql;
14 loop
15 fetch v_tempcursor into i1,i2,i3;
16 l_data.extend;
17 l_data(l_data.count) := myobjectype(i1,i3,i2);
18 exit when v_tempcursor%NOTFOUND;
19 end loop;
20 return l_data;
21 end;
22 /Function created.SQL> commit;Commit complete.--测试不传表名参数的function(testrerecorenotabname)
SQL> set serveroutput on
SQL> declare
2 testre mytabletype :=mytabletype();
3 i number :=0;
4 begin
5 testre := testrerecordnotabname(1);
6 loop
7 i := i+1;
8 dbms_output.put_line(';' || testre(i).x || ';' || testre(i).y || ';' || testre(i).z || ';');
9 exit when i = testre.count;
10 end loop;
11 end;
12 /
;1;01-7?? -02;aaa;
;2;02-7?? -02;bbb;
;3;03-7?? -02;ccc;
;4;04-7?? -02;ddd;
;5;05-7?? -02;eee;
;6;06-7?? -02;fff;PL/SQL procedure successfully completed.--测试传表名参数的function(testrerecoretabname)
SQL> set serveroutput on
SQL> declare
2 testre mytabletype :=mytabletype();
3 i number :=0;
4 begin
5 testre := testrerecordtabname('a',1);
6 loop
7 i := i+1;
8 dbms_output.put_line(';' || testre(i).x || ';' || testre(i).y || ';' || testre(i).z || ';');
9 exit when i = testre.count;
10 end loop;
11 end;
12 /
;1;01-7?? -02;aaa;
;2;02-7?? -02;bbb;
;3;03-7?? -02;ccc;
;4;04-7?? -02;ddd;
;5;05-7?? -02;eee;
;6;06-7?? -02;fff;
;6;06-7?? -02;fff;PL/SQL procedure successfully completed.
--------------------------------------------------------------------------------------------------------------
利用对象类型通过字符串分析出数据函数:
create or replace type mytabletype as table of number;
/create or replace function strtab(p_str in varchar2)
return mytabletype
as
lstr varchar2(1000) default p_str||',';
ln number;
ldata mytabletype:=mytabletype();
begin
loop
ln:=instr(lstr,',');
exit when (nvl(ln,0)=0);
ldata.extend;
ldata(ldata.count):=ltrim(rtrim(substr(lstr,1,ln-1)));
lstr:=substr(lstr,ln+1);
end loop;
return ldata;
end;
/SQL> select * from table(cast(strtab('11,12,13') as mytabletype));COLUMN_VALUE
------------
11
12
13SQL> create table bb(id varchar2(2),name varchar2(10));Table createdSQL> insert into bb values('11','张三');1 row insertedSQL> insert into bb values('12','李四');1 row insertedSQL> insert into bb values('13','王五');1 row insertedSQL> select * from bb where id in (select * from table(cast(strtab('11,12,13') as mytabletype)));ID NAME
-- ----------
11 张三
12 李四
13 王五
------------------------------------------------------------------------------------------------------------------
--创建可以返回纪录集的函数(不传入表名参数)
SQL> create or replace function testrerecordnotabname (tableid in number)
2 return mytabletype
3 as
4 l_data mytabletype :=mytabletype();
5 begin
6 for i in (select * from a where id>=tableid) loop
7 l_data.extend;
8 l_data(l_data.count) := myobjectype(i.id,i.doctime,i.name);
9 exit when i.id = 62;
10 end loop;
11 return l_data;
12 end;
13 /Function created.SQL> commit;Commit complete.--创建可以返回纪录集的函数(可以传入表名参数)
SQL> create or replace function testrerecordtabname (tablename in varchar2,tableid in number)
2 return mytabletype
3 as
4 l_data mytabletype :=mytabletype();
5 strsql varchar2(50);
6 type v_cursor is ref cursor;
7 v_tempcursor v_cursor;
8 i1 number;
9 i2 varchar2(50);
10 i3 date;
11 begin
12 strsql := 'select * from ' || tablename || ' where id>=' || tableid;
13 open v_tempcursor for strsql;
14 loop
15 fetch v_tempcursor into i1,i2,i3;
16 l_data.extend;
17 l_data(l_data.count) := myobjectype(i1,i3,i2);
18 exit when v_tempcursor%NOTFOUND;
19 end loop;
20 return l_data;
21 end;
22 /Function created.SQL> commit;Commit complete.--测试不传表名参数的function(testrerecorenotabname)
SQL> set serveroutput on
SQL> declare
2 testre mytabletype :=mytabletype();
3 i number :=0;
4 begin
5 testre := testrerecordnotabname(1);
6 loop
7 i := i+1;
8 dbms_output.put_line(';' || testre(i).x || ';' || testre(i).y || ';' || testre(i).z || ';');
9 exit when i = testre.count;
10 end loop;
11 end;
12 /
;1;01-7?? -02;aaa;
;2;02-7?? -02;bbb;
;3;03-7?? -02;ccc;
;4;04-7?? -02;ddd;
;5;05-7?? -02;eee;
;6;06-7?? -02;fff;PL/SQL procedure successfully completed.--测试传表名参数的function(testrerecoretabname)
SQL> set serveroutput on
SQL> declare
2 testre mytabletype :=mytabletype();
3 i number :=0;
4 begin
5 testre := testrerecordtabname('a',1);
6 loop
7 i := i+1;
8 dbms_output.put_line(';' || testre(i).x || ';' || testre(i).y || ';' || testre(i).z || ';');
9 exit when i = testre.count;
10 end loop;
11 end;
12 /
;1;01-7?? -02;aaa;
;2;02-7?? -02;bbb;
;3;03-7?? -02;ccc;
;4;04-7?? -02;ddd;
;5;05-7?? -02;eee;
;6;06-7?? -02;fff;
;6;06-7?? -02;fff;PL/SQL procedure successfully completed.
--------------------------------------------------------------------------------------------------------------
利用对象类型通过字符串分析出数据函数:
create or replace type mytabletype as table of number;
/create or replace function strtab(p_str in varchar2)
return mytabletype
as
lstr varchar2(1000) default p_str||',';
ln number;
ldata mytabletype:=mytabletype();
begin
loop
ln:=instr(lstr,',');
exit when (nvl(ln,0)=0);
ldata.extend;
ldata(ldata.count):=ltrim(rtrim(substr(lstr,1,ln-1)));
lstr:=substr(lstr,ln+1);
end loop;
return ldata;
end;
/SQL> select * from table(cast(strtab('11,12,13') as mytabletype));COLUMN_VALUE
------------
11
12
13SQL> create table bb(id varchar2(2),name varchar2(10));Table createdSQL> insert into bb values('11','张三');1 row insertedSQL> insert into bb values('12','李四');1 row insertedSQL> insert into bb values('13','王五');1 row insertedSQL> select * from bb where id in (select * from table(cast(strtab('11,12,13') as mytabletype)));ID NAME
-- ----------
11 张三
12 李四
13 王五
------------------------------------------------------------------------------------------------------------------
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货