create or replace procedure proc_drop_table(t_name in varchar2) is
c_type varchar2(20);
t_count int;
v_count int;
i_count int;
s_count int;
begin
begin
select object_type
into c_type
from all_objects
where object_name = upper(t_name);
exception
when others then
dbms_output.put_line('the ' || t_name ||
' is not in this database !');
end;
select count(*)
into t_count
from user_tables
where table_name = upper(t_name);
select count(*)
into v_count
from user_views
where view_name = upper(t_name);
select count(*)
into i_count
from user_indexes
where index_name = upper(t_name);
select count(*)
into s_count
from user_sequences
where sequence_name = upper(t_name);
-----------table
if c_type = 'table' then
if t_count > 0 then
execute immediate 'drop table ' || t_name || ' purge';
dbms_output.put_line('the table :' || t_name || ' is drop !');
end if;
commit;
end if;
--------- view
if c_type = 'view' then
if v_count > 0 then
execute immediate 'drop view ' || t_name;
dbms_output.put_line('the view :' || t_name || ' is drop !');
end if;
end if;
--------- sqe
if c_type = 'sequence' then
if s_count > 0 then
execute immediate 'drop sequence ' || t_name;
dbms_output.put_line('the sequence :' || t_name || ' is drop !');
end if;
end if;
-------- index
if c_type = 'index' then
if i_count > 0 then
execute immediate 'drop index ' || t_name;
dbms_output.put_line('the index :' || t_name || ' is drop !');
end if;
end if;
end proc_drop_table;
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