Oracle插入数据库之前先判断是否存在的SQL简单示例
插入语句时判断是否存在的SQL语句: insert into appointmen_record( app_type_id, app_time_id, create_user, appointmen_date ) select "2c8f50808c3b49b1a9d...
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插入语句时判断是否存在的SQL语句: insert into appointmen_record( app_type_id, app_time_id, create_user, appointmen_date ) select "2c8f50808c3b49b1a9d...