[设置表名](%E8%AE%BE%E7%BD%AE%E8%A1%A8%E5%90%8D.md) [select](select.md) [where](where.md) [order](order.md) [group](group.md) [聚合查询](%E8%81%9A%E5%90%88%E6%9F%A5%E8%AF%A2.md) [数据索引](%E6%95%B0%E6%8D%AE%E7%B4%A2%E5%BC%95.md) [数据去重](%E6%95%B0%E6%8D%AE%E5%8E%BB%E9%87%8D.md) [批处理](%E6%89%B9%E5%A4%84%E7%90%86.md) [新增/修改](%E6%96%B0%E5%A2%9E-%E4%BF%AE%E6%94%B9.md) [更新计数](%E6%9B%B4%E6%96%B0%E8%AE%A1%E6%95%B0.md) [删除](%E5%88%A0%E9%99%A4.md) [打印sql](%E6%89%93%E5%8D%B0sql.md) [事务](%E4%BA%8B%E5%8A%A1.md) [批量插入](%E6%89%B9%E9%87%8F%E6%8F%92%E5%85%A5.md) [leftjoin](leftjoin.md) [控制器信息](%E6%8E%A7%E5%88%B6%E5%99%A8%E4%BF%A1%E6%81%AF.md)