Oracle根据某个值查找其所在的表、字段

DECLARE  
CURSOR cur_query IS  
  SELECT table_name, column_name, data_type FROM user_tab_columns;  
  a NUMBER;  
  sql_hard VARCHAR2(2000);  
  vv NUMBER;  
BEGIN  
  FOR rec1 IN cur_query LOOP  
  a:=0;  
  IF rec1.data_type ='NUMBER' THEN  
  a := 1;  
  END IF;  
  IF a>0 THEN  
  sql_hard := '';  
  sql_hard := 'SELECT COUNT(*) FROM  '|| rec1.table_name ||' WHERE '  ||rec1.column_name  || '=''管理员''';
  dbms_output.put_line(sql_hard);   
  EXECUTE IMMEDIATE sql_hard INTO vv;  
  IF vv > 0 THEN  
   dbms_output.put_line('[字段值所在的表.字段]:['||rec1.table_name||'].['||rec1.column_name||']');  
  END IF;   
  END IF;  
  END LOOP;  
END;  

直接在PL/SQL的sql窗口中执行，在输出中即可看到查找结果

DECLARE  
CURSOR cur_query IS   
  SELECT table_name, column_name, data_type FROM user_tab_columns;   
  a NUMBER;   
  sql_hard VARCHAR2(2000);   
  vv NUMBER;  
BEGIN   
  DBMS_OUTPUT.ENABLE(buffer_size => null);
  FOR rec1 IN cur_query LOOP  
  a:=0;   
  IF rec1.data_type ='VARCHAR2' OR rec1.data_type='CHAR' THEN   
  a := 1;   
  END IF;   
  IF a>0 THEN   
  sql_hard := '';   
  sql_hard := 'SELECT count(*) FROM '|| rec1.table_name ||' where '   
  ||rec1.column_name|| ' like''管理员''';
  dbms_output.put_line(sql_hard);   
  EXECUTE IMMEDIATE sql_hard INTO vv;  
  IF vv > 0 THEN dbms_output.put_line('[字段值所在的表.字段]:['||rec1.table_name||'].['||rec1.column_name||']');   
  END IF;  
  END IF;  
  END LOOP;  
END;