select table_name from dba_tables where num_rows=0;
select table_name from all_tables where num_rows=0;
select table_name from user_tables where num_rows=0;
select table_name from all_tables where num_rows=0;
select table_name from user_tables where num_rows=0;
SQL> select table_name,num_rows from user_tables;TABLE_NAME NUM_ROWS
------------------------------ ----------
PLAN_TABLE
RELATION_DR
RELATION_ED
RESULTD
RESULTE
RESULTR
TEST已选择7行。根本没有值啊