对first_name创建唯一索引uniq_idx_firstname,对last_name创建普通索引idx_lastname
CREATE UNIQUE INDEX uniq_idx_firstname ON actor(first_name); CREATE INDEX idx_lastname ON actor(last_name);
对first_name创建唯一索引uniq_idx_firstname,对last_name创建普通索引idx_lastname
CREATE UNIQUE INDEX uniq_idx_firstname ON actor(first_name); CREATE INDEX idx_lastname ON actor(last_name);