---定于包
create or replace package pkg_query as
type cur_query is ref cursor;
end pkg_query;
---存储过程
CREATE OR REPLACE PROCEDURE prc_query
(
p_tableName in varchar2, --表名
p_strWhere in varchar2, --查询条件
p_orderColumn in varchar2, --排序的列
p_orderStyle in varchar2, --排序方式
p_curPage in out Number, --当前页
p_pageSize in out Number, --每页显示记录条数
p_totalRecords out Number, --总记录数
p_totalPages out Number, --总页数
v_cur out pkg_query.cur_query --返回的结果集
)
IS
v_sql VARCHAR2(1000) := ''; --sql语句
v_startRecord Number(4); --开始显示的记录条数
v_endRecord Number(4); --结束显示的记录条数
BEGIN
--记录中总记录条数
v_sql := 'SELECT TO_NUMBER(COUNT(*)) FROM ' || p_tableName || ' WHERE 1=1';
IF p_strWhere IS NOT NULL or p_strWhere <> '' THEN
v_sql := v_sql || p_strWhere;
END IF;
EXECUTE IMMEDIATE v_sql INTO p_totalRecords; --验证页面记录大小
IF p_pageSize < 0 THEN
p_pageSize := 0;
END IF; --根据页大小计算总页数
IF MOD(p_totalRecords,p_pageSize) = 0 THEN
p_totalPages := p_totalRecords / p_pageSize;
ELSE
p_totalPages := p_totalRecords / p_pageSize + 1;
END IF; --验证页号
IF p_curPage < 1 THEN
p_curPage := 1;
END IF;
IF p_curPage > p_totalPages THEN
p_curPage := p_totalPages;
END IF; --实现分页查询
v_startRecord := (p_curPage - 1) * p_pageSize + 1;
v_endRecord := p_curPage * p_pageSize;
v_sql := 'SELECT * FROM (SELECT A.*, rownum r FROM ' ||
'(SELECT * FROM ' || p_tableName;
IF p_strWhere IS NOT NULL or p_strWhere <> '' THEN
v_sql := v_sql || ' WHERE 1=1' || p_strWhere;
END IF;
IF p_orderColumn IS NOT NULL or p_orderColumn <> '' THEN
v_sql := v_sql || ' ORDER BY ' || p_orderColumn || ' ' || p_orderStyle;
END IF;
v_sql := v_sql || ') A WHERE rownum <= ' || v_endRecord || ') B WHERE r >= '
|| v_startRecord; DBMS_OUTPUT.put_line(v_sql); --打开游标
OPEN v_cur FOR v_sql;
END prc_query;var a NUMBER
var b NUMBER
var c NUMBER
var d NUMBER
var e pkg_query.cur_query
EXEC pkg_query.prc_query ('pms_design_company','*','dsn_id','desc',:a,:b,:c,:d,:e)
e 那里该怎样写呢?
create or replace package pkg_query as
type cur_query is ref cursor;
end pkg_query;
---存储过程
CREATE OR REPLACE PROCEDURE prc_query
(
p_tableName in varchar2, --表名
p_strWhere in varchar2, --查询条件
p_orderColumn in varchar2, --排序的列
p_orderStyle in varchar2, --排序方式
p_curPage in out Number, --当前页
p_pageSize in out Number, --每页显示记录条数
p_totalRecords out Number, --总记录数
p_totalPages out Number, --总页数
v_cur out pkg_query.cur_query --返回的结果集
)
IS
v_sql VARCHAR2(1000) := ''; --sql语句
v_startRecord Number(4); --开始显示的记录条数
v_endRecord Number(4); --结束显示的记录条数
BEGIN
--记录中总记录条数
v_sql := 'SELECT TO_NUMBER(COUNT(*)) FROM ' || p_tableName || ' WHERE 1=1';
IF p_strWhere IS NOT NULL or p_strWhere <> '' THEN
v_sql := v_sql || p_strWhere;
END IF;
EXECUTE IMMEDIATE v_sql INTO p_totalRecords; --验证页面记录大小
IF p_pageSize < 0 THEN
p_pageSize := 0;
END IF; --根据页大小计算总页数
IF MOD(p_totalRecords,p_pageSize) = 0 THEN
p_totalPages := p_totalRecords / p_pageSize;
ELSE
p_totalPages := p_totalRecords / p_pageSize + 1;
END IF; --验证页号
IF p_curPage < 1 THEN
p_curPage := 1;
END IF;
IF p_curPage > p_totalPages THEN
p_curPage := p_totalPages;
END IF; --实现分页查询
v_startRecord := (p_curPage - 1) * p_pageSize + 1;
v_endRecord := p_curPage * p_pageSize;
v_sql := 'SELECT * FROM (SELECT A.*, rownum r FROM ' ||
'(SELECT * FROM ' || p_tableName;
IF p_strWhere IS NOT NULL or p_strWhere <> '' THEN
v_sql := v_sql || ' WHERE 1=1' || p_strWhere;
END IF;
IF p_orderColumn IS NOT NULL or p_orderColumn <> '' THEN
v_sql := v_sql || ' ORDER BY ' || p_orderColumn || ' ' || p_orderStyle;
END IF;
v_sql := v_sql || ') A WHERE rownum <= ' || v_endRecord || ') B WHERE r >= '
|| v_startRecord; DBMS_OUTPUT.put_line(v_sql); --打开游标
OPEN v_cur FOR v_sql;
END prc_query;var a NUMBER
var b NUMBER
var c NUMBER
var d NUMBER
var e pkg_query.cur_query
EXEC pkg_query.prc_query ('pms_design_company','*','dsn_id','desc',:a,:b,:c,:d,:e)
e 那里该怎样写呢?
var b NUMBER
var c NUMBER
var d NUMBER
var e pkg_query.cur_query
EXEC pkg_query.prc_query ('pms_design_company','*','dsn_id','desc',:a,:b,:c,:d,:e)
执行不了 我该怎么写 才会执行
declare
a number := -1;
b number := 5;
c number ;
d number ;
e pkg_query.cur_query;
begin
prc_query('emp','','sal','desc',a,b,c,d,e) ;
Dbms_Output.put_line('curPage='||a);
Dbms_Output.put_line('pageSize='||b);
Dbms_Output.put_line('totalRecords='||c);
Dbms_Output.put_line('totalPages='||d);
end;--result: PL/SQL block, executed in 0.031 sec.
SELECT * FROM (SELECT A.*, rownum r FROM (SELECT * FROM emp ORDER BY sal desc) A WHERE rownum <= 5) B WHERE r >= 1
curPage=1
pageSize=5
totalRecords=16
totalPages=4.2
Total execution time 0.031 sec.
果然可以.