select num_rows,blocks,empty_blocks,avg_space,chain_cnt,avg_row_len,sample_size,last_analyzed from user_tables where table_name='DEPT';
select count(*) from dept;
select num_rows,blocks,empty_blocks,avg_space,chain_cnt,avg_row_len,sample_size,last_analyzed from user_tables where table_name='DEPT';
select count(*) from dept;