DROP PARTITION POLICY [IF EXISTS] partition_policy_name

# 删除已存在的名为 pp1 的分区亲和性策略
tdsql [(none)]> drop partition policy pp1;
Query OK, 0 rows affected (0.01 sec)

# 删除不存在的分区亲和性策略
tdsql [(none)]> drop partition policy pp1;
ERROR 8596 (HY000): Unknown partition policy 'pp1'.

# 指定 IF EXISTS，删除不存在的分区亲和性策略
tdsql [(none)]> drop partition policy if exists  pp1;
Query OK, 0 rows affected, 1 warning (0.00 sec)