PL / SQL用游标执行立即参数

Question

CREATE OR REPLACE PROCEDURE ZAD_CZWARTE AS 

row_num number;
sql_stmnt varchar2(200);
cursor kursor is
select table_name from user_tables;
tab_name varchar2(200);
BEGIN

  FOR c_kur IN kursor LOOP
  tab_name := c_kur.table_name;
  --dbms_output.put_line(tab_name);
  sql_stmnt :='SELECT COUNT(*) FROM :1';
  execute immediate sql_stmnt into row_num using tab_name;
  DBMS_OUTPUT.PUT_LINE(tab_name||' : '||row_num);

  END LOOP;

END zad_czwarte;

问题出现了s a problem with execute immediate line. Anybody knows what？一切似乎都适合我。任务是输出用户的表名，其中包含行数。

Answer 1

您不能将物理表绑定为绑定变量。您的命令必须是sql_stmnt :='SELECT COUNT(*) FROM ' || tab_name;，然后是execute immediate sql_stmnt into row_num;