Oracle查询数据库中全部表的记录数

一、Oracle查询数据库中全部表的记录数，可是有可能不许建议用第二种方式进行查询

　　　　select t.table_name,t.num_rows from user_tables t

二、建立oracle函数，经过函数中查询词表记录数显示当前记录数

create or replace function count_rows(table_name in varchar2,
                                      owner      in varchar2 default null)
  return number authid current_user IS
  num_rows number;
  stmt     varchar2(2000);
begin
  if owner is null then
    stmt := 'select count(*) from "' || table_name || '"';
  else
    stmt := 'select count(*) from "' || owner || '"."' || table_name || '"';
  end if;
  execute immediate stmt
    into num_rows;
  return num_rows;
end;

以后执行：select table_name, count_rows(table_name) nrows from user_tables 

就能够准确查询到记录数