小编eth*_*han的帖子

当我创建以下过程时

create or replace procedure check_exec_imm(
tab IN VARCHAR2,
col IN VARCHAR2,
col_name IN VARCHAR2

)

IS

 cv  SYS_REFCURSOR;
 col_value  VARCHAR2(32767);
 lv_query VARCHAR2(32767); 

 BEGIN
   lv_query := 'SELECT ' ||col||
           ' FROM ' ||tab||
           ' WHERE (:1 = ''EUR'' OR :1 = ''USD'') and rownum <=1';


    EXECUTE IMMEDIATE lv_query INTO col_value USING  col_name ;


DBMS_OUTPUT.PUT_LINE('COLUMN VALUE : ' || col_value);

END;

执行该过程时,我收到以下错误

ORA-01008: not all variables bound
ORA-06512: at "GRM_IV.CHECK_EXEC_IMM", line 18
ORA-06512: at line 2

当我再次给出bind参数col_name时,该过程运行正常.

EXECUTE IMMEDIATE lv_query INTO …