Oracle查询每张表的记录数

 --1。执行
 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;

 --2.执行
 select table_name, count_rows(table_name) nrows
   from user_tables
  order by table_name asc

 

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