Oracle分页存储过程及PLSQL中的调用脚本

2020-11-09 来源：品趣旅游知识分享网

撰写过程:网上搜集测试了好多的Oracle分页存储过程代码,经整理后终于通过测试,特分享给大家测试步骤:1、运行创建包命令;2、运行创建存储过程命令;3、运行调用分页存储过程语句测试环境:windows2003+Oracle11g+PLSQL Developer --1、创建包命令 create or r

撰写过程:网上搜集测试了好多的Oracle分页存储过程代码,经整理后终于通过测试,特分享给大家

测试步骤:1、运行创建包命令;2、运行创建存储过程命令;3、运行调用分页存储过程语句

测试环境:windows2003+Oracle11g+PLSQL Developer

--1、创建包命令

create or replace package mypackage as
type cursor_page is ref cursor;
Procedure myprocdure(
p_TableName varchar2, --表名
p_Fields varchar2, --查询列
p_Orderby varchar2, --排序
p_Where varchar2, --查询条件
p_pagesize Number, --每页大小
p_pageIndex Number, --当前页
p_rowcount out Number, --总条数,输出参数
p_pagecount out number, --总页数
p_cursor out cursor_page); --结果集
end mypackage;

--2、创建存储过程命令

CREATE OR REPLACE Package Body mypackage
Is
--存储过程
Procedure myprocdure(
p_TableName varchar2, --表名
p_Fields varchar2, --查询列
p_Orderby varchar2, --排序
p_Where varchar2, --查询条件
p_pagesize Number, --每页大小
p_pageIndex Number, --当前页
p_rowcount out Number, --总条数,输出参数
p_pagecount out number, --总页数
p_cursor out cursor_page --结果集
)
is
v_count_sql varchar2(2000);

v_select_sql varchar2(2000);

s_TableName nvarchar2(255);--分页表名

begin
--查询总条数
v_count_sql:='select count(*) from '||p_TableName;
--连接查询条件(''也属于is null)
if p_Where is not null then
v_count_sql:=v_count_sql||' where '||p_Where;
end if;
--执行查询,查询总条数
execute immediate v_count_sql into p_rowcount;

--dbms_output.put_line('查询总条数SQL=>'||v_count_sql);
--dbms_output.put_line('查询总条数Count='||p_rowcount);

--得到总页数
if mod(p_rowcount,p_pagesize)=0 then
p_pagecount:=p_rowcount/p_pagesize;
else
p_pagecount:=p_rowcount/p_pagesize+1;
end if;

--如果查询记录大于0则查询结果集
if p_rowcount>0 and p_pageIndex>=1 and p_pageIndex<=p_pagecount then

--查询所有(只有一页)
if p_rowcount<=p_pagesize then
v_select_sql:='select '||p_Fields||' from '||p_TableName;
if p_Where is not null then
v_select_sql:=v_select_sql||' where '||p_Where;
end if;
if p_Orderby is not null then
v_select_sql:=v_select_sql||' order by '||p_Orderby;
end if;
elsif p_pageIndex=1 then --查询第一页
v_select_sql:='select '||p_Fields||' from '||p_TableName;
if p_Where is not null then
v_select_sql:=v_select_sql||' where '||p_Where||' and rownum<='||p_pagesize;
else
v_select_sql:=v_select_sql||' where rownum<='||p_pagesize;
end if;
if p_Orderby is not null then
v_select_sql:=v_select_sql||' order by '||p_Orderby;
end if;
else --查询指定页

if instr(p_TableName,')')>0 then
s_TableName:=replace(substr(p_TableName,instr(p_TableName,')')+1),' ','');
v_select_sql:='select * from (select '||s_TableName||'.' || p_Fields ||',rownum row_num from '|| p_TableName;
else
v_select_sql:='select * from (select '|| p_TableName || '.' || p_Fields ||',rownum row_num from '|| p_TableName;
end if;

if p_Where is not null then
v_select_sql:=v_select_sql||' where '||p_Where;
end if;
if p_Orderby is not null then
v_select_sql:=v_select_sql||' order by '||p_Orderby;
end if;
v_select_sql:=v_select_sql||') where row_num>'||((p_pageIndex-1)*p_pagesize)||' and row_num<='||(p_pageIndex*p_pagesize);
end if;
--执行查询
--dbms_output.put_line('查询语句=>'||v_select_sql);
open p_cursor for v_select_sql;
else
--dbms_output.put_line('查询语句=>'||'select * from '||p_TableName||' where 1!=1');
open p_cursor for 'select * from '||p_TableName||' where 1!=1';
end if;

end myprocdure;
end mypackage;

--3、调用分页存储过程语句
declare
p_TableName varchar2(2000);
p_Fields varchar2(2000);
p_Orderby varchar2(200);
p_Where varchar2(200);
p_pagesize Number;
p_pageIndex Number;
p_rowcount Number;
p_pagecount number;
p_cursor mypackage.cursor_page ;
begin
p_TableName:='GOODSDOC';
p_Fields:='*';
p_Orderby:='GOODSNAME';
p_Where:='1=1';
p_pagesize:=100;
p_pageIndex:=1;
mypackage.myprocdure(p_TableName,p_Fields,p_Orderby,p_Where,p_pagesize,p_pageIndex,p_rowcount,p_pagecount,p_cursor);
DBMS_OUTPUT.PUT_LINE('记录总数'||p_rowcount||'页面总数'||p_pagecount);
END;

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Oracle分页存储过程及PLSQL中的调用脚本