drop table �׻����Ѹ�;

ERROR:Relation '�׻����Ѹ�' does not exist

ERROR:table "�׻����Ѹ�" is nonexistent

create table �׻����Ѹ� (�Ѹ� text, ʬ�ॳ���� varchar, ����1A���� char(16));

create index �׻����Ѹ�index1 on �׻����Ѹ� using btree (�Ѹ�);

create index �׻����Ѹ�index2 on �׻����Ѹ� using hash (ʬ�ॳ����);