oracle中函数和存储过程简单示例-动态sql

oracle中函数和存储过程

1. 函数

create or replace function getArtCount(keyword in varchar2) return number

as

Result number;

Sqlt varchar2(4000);

begin

-- select t.sys_documentid into Result from dom_2_doclib t where t.sys_topic like '%key%';

-- select count(t.sys_documentid) into Result from dom_2_doclib t where t.art_auctioncode like '%art%';

-- select count(t.sys_documentid) into Result from dom_2_doclib t where t.sys_topic like '%1%';

-- select count(t.sys_documentid) into Result from dom_2_doclib t where t.sys_topic like '%高%';

Sqlt:='select count(t.sys_documentid) from dom_2_doclib t where t.art_auctioncode='''||keyword||''' or t.sys_topic like ''%'||keyword||'%''';
Sqlt:=Sqlt||' or t.art_authors like ''%'||keyword||'%''';


dbms_output.put_line(Sqlt);

EXECUTE IMMEDIATE Sqlt INTO Result;

-- Execute IMMEDIATE Sqlt into Result;

dbms_output.put_line(Result);
return Result;

end getArtCount;

调用方法:

select getArtcount('齐白石') from dual;

2. 储存过程

create or replace procedure getArtsCount(artcount out number,keyword in varchar2) as

Sqlt varchar2(4000);

begin
-- select count(*) into artcount from dom_2_doclib t where t.sys_topic like '%key%';

Sqlt:='select count(t.sys_documentid) from dom_2_doclib t where t.art_auctioncode='''||keyword||''' or t.sys_topic like ''%'||keyword||'%''';
Sqlt:=Sqlt||' or t.art_authors like ''%'||keyword||'%''';

EXECUTE IMMEDIATE Sqlt INTO artcount;

dbms_output.put_line(Sqlt);
end;

调用方法 ：

declare

a number;

begin

getArtsCount(a,'a');

dbms_output.put_line('aaaa=='||a);

end;