在Oracle pl / sql电子邮件发送中运行For循环时如何使用变量作为

我无法编译Oracle代码的这一部分,因为编译器报告“PL / SQL：ORA-00942：表或视图不存在”

Oracle表存在,但此过程必须根据“Order_ID”参数将表名传递给For循环过程.我在表存在的Schema中工作,所以我没有解决模式名称.

示例：TEMP_TBL_123存在于数据库中,通过传递order_ID为123,我尝试使用变量TMP_TBL_NM来保存表名“TEMP_TBL_123”.

………………………………………….

CREATE OR REPLACE PROCEDURE EMAIL_DEPT_BLAST_TEST (SUBJECT VARCHAR2,MAIL_FROM VARCHAR2,MAIL_TO VARCHAR2,L_MESSAGE VARCHAR2,L_MESSAGE2 VARCHAR2,ORDER_ID NUMBER)
IS
MAIL_HOST VARCHAR2(30):='XX.XX.XX.XX';
MAIL_CONN UTL_SMTP.CONNECTION;
TMP_TBL_NM VARCHAR2(30);

BEGIN

TMP_TBL_NM := 'TEMP_TBL_' || ORDER_ID;

MAIL_CONN := UTL_SMTP.OPEN_CONNECTION(MAIL_HOST,25);
UTL_SMTP.HELO(MAIL_CONN,MAIL_HOST);
UTL_SMTP.MAIL(MAIL_CONN,'XXX@XXXXXX.com');
UTL_SMTP.RCPT(MAIL_CONN,MAIL_TO);
UTL_SMTP.OPEN_DATA(MAIL_CONN);
UTL_SMTP.WRITE_DATA(MAIL_CONN,'Date: '||to_char(trunc(SYSDATE))||utl_tcp.crlf);
UTL_SMTP.WRITE_DATA(MAIL_CONN,'From: '|| mail_from ||utl_tcp.crlf);
UTL_SMTP.WRITE_DATA(MAIL_CONN,'To: '|| mail_to || utl_tcp.crlf);
UTL_SMTP.WRITE_DATA(MAIL_CONN,'Subject: '||subject||utl_tcp.crlf);
UTL_SMTP.WRITE_DATA(MAIL_CONN,UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(MAIL_CONN,''|| L_MESSAGE || UTL_TCP.CRLF);
UTL_SMTP.WRITE_DATA(MAIL_CONN,UTL_TCP.CRLF);

UTL_SMTP.WRITE_DATA(MAIL_CONN,'Order details:' || UTL_TCP.crlf);
UTL_SMTP.WRITE_DATA(MAIL_CONN,'Quantity - Location ID - Address' || UTL_TCP.crlf);

BEGIN
    FOR I IN (SELECT LOCATION_ID,TRIM(TO_CHAR(COUNT(*),'9,999')) AS QUANTITY FROM TMP_TBL_NM GROUP BY LOCATION_ID)
    LOOP 
    UTL_SMTP.WRITE_DATA(MAIL_CONN,I.QUANTITY  || ' - ');
    UTL_SMTP.WRITE_DATA(MAIL_CONN,I.LOCATION_ID || ' ');
    UTL_SMTP.WRITE_DATA(MAIL_CONN,UTL_TCP.CRLF);
    END LOOP;
END;

UTL_SMTP.WRITE_DATA(MAIL_CONN,L_MESSAGE2 || UTL_TCP.CRLF);  

UTL_SMTP.WRITE_DATA(MAIL_CONN,UTL_TCP.CRLF);
UTL_SMTP.CLOSE_DATA(MAIL_CONN);
UTL_SMTP.QUIT(MAIL_CONN);

END SCT_CNTS_EMAIL_DEPT_BLAST_TEST;

解决方法

DECLARE
    C SYS_REFCURSOR;
    stmt VARCHAR2(1000); 
    tmp_tbl_nm  VARCHAR2(64) := 'USER_TABLES';
    the_name    VARCHAR2(64);
BEGIN
    stmt := 'SELECT table_name  FROM ' || TMP_TBL_NM || ' ORDER BY 1';
    OPEN C FOR stmt;
    LOOP
      FETCH C INTO the_name;
      EXIT WHEN C%NOTFOUND;
      dbms_output.put_line(the_name);
    END LOOP;
END;
/
CONTINENT
COUNTRY
COUNTRYINFOIMPORT
COUNTRY_LANGUAGE
GEONAME
LANGUAGE

PL/SQL procedure successfully completed.

SQL>

我不认为你可以使用EXECUTE IMMEDIATE语句返回游标. This documentation page,第二段,似乎表明没有.无论如何,你不需要它,只需使用OPEN – FOR语法.

（编辑：源码网）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!