Deleting Volatile Data
Delete Data
Volatile tables can delete data using the primary key value condition in the condition clause (WHERE clause).
- The primary key column must be specified in the volatile table.
- Only the (Primary key column) = (value) condition is allowed, and can not be used with other conditions.
- You can not use a column other than the primary key column.
Mach> create volatile table vtable (id integer primary key, name varchar(20));
Created successfully.
Mach> insert into vtable values(1, 'west device');
1 row(s) inserted.
Mach> insert into vtable values(2, 'east device');
1 row(s) inserted.
Mach> insert into vtable values(3, 'north device');
1 row(s) inserted.
Mach> insert into vtable values(4, 'south device');
1 row(s) inserted.
Mach> select * from vtable;
ID NAME
-------------------------------------
1 west device
2 east device
3 north device
4 south device
[4] row(s) inserted.
Mach> delete from vtable where id = 2;
[1] row(s) deleted.
Mach> select * from vtable;
ID NAME
-------------------------------------
1 west device
3 north device
4 south device
[3] row(s) selected.Last updated on