oracle 查询所有表的记录数 SQL

查询用户所有表的总记录数, 并按总记录数进行排序.

1、创建函数

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;

2.然后通过计算函数进行统计

select table_name, count_rows(table_name)  nrows from user_tables order by nrows desc