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<p><FONT class=normalfont><B><font color=blue>ORACLE应用经验(3)-DBMS_SQL封装过程</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者：作者<br>来自：Linux知识宝库<br>联系方式：无名<br><br>DBMS_SQL封装过程中主要函数<br>
1、OPEN_CURSOR：返回新游标的ID值<br>
2、PARSE：解析要执行的语句<br>
3、BIND_VARIABLE：将给定的数量与特定的变量相连接<br>
4、DEFINE_COLOUMN：定义字段变量，其值对应于指定游标中某个位置元素的值<br>
（仅用于SELECT语句）<br>
5、EXECUTE：执行指定的游标<br>
6、EXECUTE_AND_FETCH：执行指定的游标并取记录<br>
7、FETCH_ROWS：从指定的游标中取出记录<br>
8、COLUMN_VALUE：返回游标中指定位置的元素<br>
9、IS_OPEN：当指定的游标状态为OPEN时返回真值<br>
10、CLOSE_CURSOR：关闭指定的游标并释放内存<br>
11、LAST_ERROR_POSITION：返回出错SQL语句的字节偏移量<br>
12、LAST_ROW_ID：返回最后一条记录的ROWID<br>
13、LAST_SQL_FUNCTION_CODE：返回语句的SQL FUNCTION CODE<br>
<br>
例：<br>
CREATE OR REPLACE<br>
procedure dml_sql (the_rq varchar2) as<br>
The_c1 Integer;<br>
The_result Integer;--dml_sql_result<br>
M_jls number;<br>
The_xh varchar2(2);<br>
Begin<br>
The_xh:=lpad(ltrim(the_rq),2,'0');<br>
The_C1 :=Dbms_sql.open_cursor;<br>
Dbms_sql.parse(the_C1,'select count(*) from user_indexes <br>
where table_name =''ZDCHB'''||the_xh,dbms_sql.v7);<br>
Dbms_sql.define_column(the_c1,1,M_jls);<br>
The_result:=Dbms_sql.execute(The_c1);<br>
If dbms_sql.fetch_rows(cursor1) > 0 then<br>
Dbms_sql.column_value(cursor1,1,M_jls);<br>
End if; <br>
Dbms_sql.close_cursor(The_C1);<br>
End;<br>
<br>
结束<br>
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