创建 Oracle 分页存储过程
1.创建Oracle包的定义。使用 REF CURSOR 数据类型来处理 Oracle 结果集。REF CURSOR 是一个指向 PL/SQL 查询所返回的结果集的指针。与普通的游标不同,REF CURSOR 是一个变量,它是对游标的引用
1.创建Oracle包的定义。使用 REF CURSOR 数据类型来处理 Oracle 结果集。REF CURSOR 是一个指向 PL/SQL 查询所返回的结果集的指针。与普通的游标不同,REF CURSOR 是一个变量,它是对游标的引用1.创建Oracle包的定义。使用 REF CURSOR 数据类型来处理 Oracle 结果集。REF CURSOR 是一个指向 PL/SQL 查询所返回的结果集的指针。与普通的游标不同,REF CURSOR 是一个变量,它是对游标的引用,可以在执行时将其设置为指向不同的结果集。使用 REF CURSOR 输出参数可以将 Oracle 结构化程序的结果集传递回调用应用程序。通过在调用应用程序中定义 OracleType.Cursor 数据类型的输出参数,可以访问 REF CURSOR 所指向的结果集。
<span><blockquote> <pre class="brush:php;toolbar:false"><span>create or replace package MF_PAK_001 is<br> type t_cursor is ref cursor;<br> procedure GetDataByPage(<br> p_tableName varchar2,<br> p_fields varchar2,<br> p_filter varchar2,<br> p_sort varchar2,<br> p_curPage number,<br> p_pageSize number,<br> p_cursor out t_cursor,<br> p_totalRecords out number <br> );<br>end MF_PAK_001;</span>
<span><blockquote><span>create or replace package body MF_PAK_001 is<br>procedure GetDataByPage(<br>p_tableName varchar2,--要查询的表名<br>p_fields varchar2,--要查询的字段<br>p_filter varchar2,--过滤条件<br>p_sort varchar2,--排序字段及方向<br>p_curPage number,<br>p_pageSize number,<br>p_cursor out t_cursor,<br>p_totalRecords out number <br>)<br>is<br>v_sql varchar2(1000):='';<br>v_startRecord number(4);<br>v_endRecord number(4);<br>begin<br></span></blockquote>--获取总的记录数<br> <blockquote><span>v_sql:=' to_number(count(*)) from '||p_tableName;<br>if p_filter is not null then<br>v_sql:=v_sql||' where 1=1 and '||p_filter;<br>end if;<br>execute immediate v_sql into p_totalRecords;<br><br>v_startRecord:=(p_curPage-1)*p_pageSize;<br>v_endRecord:=p_curPage*p_pageSize;<br><br>v_sql:='select '||p_fields||' from (select '||p_fields||',rownum r from '||<br>'(select '||p_fields||' from '||p_tableName;<br>if p_filter is not null then<br>v_sql:=v_sql||' where 1=1 and '||p_filter;<br>end if;<br>if p_sort is not null then<br>v_sql:=v_sql||' order by '||p_sort;<br>end if;<br>v_sql:=v_sql||') A where rownum='||to_char(v_startRecord);<br>open p_cursor for v_sql;<br><br>end GetDataByPage; <br>end MF_PAK_001;</span></blockquote></span>3.在Oracle中编写查询语句,执行包体中的分页存储过程,看是否能够正确执行。
<span><blockquote> <p></p> <pre class="brush:php;toolbar:false"><span>declare<br>v_cur MF_PAK_001.t_cursor;<br>v_job jobs%rowtype;<br>v_totalRecords number;<br>begin<br> MF_PAK_001.GetDataByPage('jobs','job_id,job_title,min_salary,max_salary','min_salary>0','job_id asc',</span>
<span> 1,10,v_cur,v_totalRecords);<br> fetch v_cur into v_job;<br> while v_cur%found loop<br> dbms_output.put_line(v_job.job_id||','||v_job.job_title);<br> fetch v_cur into v_job;<br> end loop;<br> dbms_output.put_line('总记录数为:'||v_totalRecords);<br>end;</span>
<span><blockquote> <pre class="brush:php;toolbar:false"><span>string connString = "Data Source=ORCL;User Id=hr;Password=Pwd123456";<br>OracleConnection conn = new OracleConnection(connString);<br><br>OracleCommand cmd = new OracleCommand();<br>cmd.Connection = conn;<br>cmd.CommandText = "MF_PAK_001.GetDataByPage";<br>cmd.CommandType = CommandType.StoredProcedure;<br><br>cmd.Parameters.Add("p_tableName", OracleType.VarChar).Value = "jobs";<br>cmd.Parameters.Add("p_fields", OracleType.VarChar).Value = "job_id,job_title,min_salary,max_salary";<br>cmd.Parameters.Add("p_filter", OracleType.VarChar).Value = "";<br>cmd.Parameters.Add("p_sort", OracleType.VarChar).Value = "job_id asc";<br>cmd.Parameters.Add("p_curPage", OracleType.Number).Value = 1;<br>cmd.Parameters.Add("p_pageSize", OracleType.Number).Value = 10;<br>cmd.Parameters.Add("p_cursor", OracleType.Cursor).Direction =ParameterDirection.Output;<br>cmd.Parameters.Add("p_totalRecords", OracleType.Number).Direction = ParameterDirection.Output;<br><br>conn.Open();<br>OracleDataReader dr = cmd.ExecuteReader();<br><br>while (dr.Read())<br>{<br> for (int i = 0; i Response.Write(dr[i].ToString() + ";");<br> Response.Write("<br>");<br>}<br>conn.Close();</span>

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



php提交表单通过后,弹出的对话框怎样在当前页弹出php提交表单通过后,弹出的对话框怎样在当前页弹出而不是在空白页弹出?想实现这样的效果:而不是空白页弹出:------解决方案--------------------如果你的验证用PHP在后端,那么就用Ajax;仅供参考:HTML code

During the use of MySQL, dates are generally stored in datetime, timestamp and other formats. However, sometimes due to special needs or historical reasons, the date is stored in varchar format. So how should we process the date data in varchar format? ? Use function: STR_TO_DATE(str,format) The STR_TO_DATE(str,format) function is the inverse function of the DATE_FORMAT() function. It takes a string str and a format string format. STR_TO_DATE() returns a DATETIME value if the format string contains date and time components, or if the word

The differences between char and varchar in mysql are: 1. CHAR is fixed length, while VARCHAR is variable length; 2. CHAR storage and retrieval efficiency is high, while VARCHAR storage and retrieval efficiency is not high; 3. CHAR takes up storage space, VARCHAR can save storage space.

CSS auxiliary style attribute analysis: cursor and pointer-events In website development, we often encounter some special needs, which need to be achieved through some auxiliary style attributes. Cursor and pointer-events are two commonly used style attributes that provide better feedback and control when users interact with the page. This article will analyze these two properties in detail and provide specific code examples. 1. Cursor attribute The cursor attribute is used to define the mouse

First of all, it is not recommended to use the TEXT type, because using TEXT will seriously affect efficiency. The best way is to use VARCHAR and determine the maximum length of the field. We can first define a field rule_value in the table and set the length to 255, then enter the smallest json string: use MySQL's CHAR_LENGTH function to calculate the size of rule_value: SELECTid, rule_type, rule_value, CHAR_LENGTH(rule_value) as rule_value_length, rule_markFROMtest_tableWHEREr

不用数据库来实现用户的简单的下载,代码如下,但是却不能下载,请高手找下原因,文件路劲什么的没问题。

图片消失如何解决先是图片文件上传$file=$_FILES['userfile']; if(is_uploaded_file($file['tmp_name'])){$query=mysql_query("INSERT INTO gdb_banner(image_src ) VALUES ('images/{$file['name'
