当前位置:网站首页>【TcaplusDB知识库】WebClient用户如何读取和修改数据
【TcaplusDB知识库】WebClient用户如何读取和修改数据
2022-06-28 16:39:00 【InfoQ】
【TcaplusDB知识库】WebClient用户如何读取和修改数据
入口
说明
功能
遍历表格
指定key查询
部分字段查询
全字段查询
索引查询
约束
- 普通sql查询,支持 =,!=,>,>=,<,<=, like, not like, betwwen, in, not in, and, or, limit offset 等查询条件。这种方式的查询结果是一个或多个完整的数据。
- 聚合查询,支持 count, sum, max, min, avg 等查询方式。这种方式的查询结果是一个或者多个统计结果,如count的结果或者sum的结果。
- limit必须和offset连用且只能用于普通sql查询,不能用于聚合查询,且 limit + offset <= 10000,且 limit <= 3000。
- 未指定limit offset值时默认limit=10, offset=0。
- 查询结果中的count表示当前查询返回数据条数。
边栏推荐
- LDD knowledge sorting
- 【Redis】2021/01/31 Redis的简单归纳 No.01
- Super automation and the future of network security
- 【TcaplusDB知识库】批量复制游戏区
- From five capabilities to "1+5+n", Huawei makes the transformation of government and enterprises more stable
- [force button] 35 Search insert location
- Introduction to LTSpice circuit simulation
- FS2K人脸素描属性识别
- MATLB|可视化学习(plot和bar)
- C#/VB.NET 将PDF转为Excel
猜你喜欢
10.hystrix circuit breaker
Flex布局
FS2K人脸素描属性识别
NOIP普及组2006-2018初赛 2019 CSP-J1 2020 CSP-J1 完善程序题
Cardinality sorting - common sorting method (2/8)
解决sqoop出现 ERROR manager.SqlManager: Generic SqlManager.listDatabases() not implemented
General solution of island problems and DFS framework
知乎热问:一个程序员的水平能差到什么程度?
关于接口测试自动化的总结与思考
中国SSD行业企业势力全景图
随机推荐
Csp-j1 csp-s1 preliminary training plan and learning points in summer and September 2022
如何清除 WordPress 中的缓存
抓取手机端变体组合思路设想
Have you ever encountered the error that the main key of this setting is consistent with the database?
Zuckerberg to investors: don't expect anything from metauniverse
【Redis】2021/01/31 Redis的简单归纳 No.01
6 - 字典
The future of platform as code is kubernetes extension
Gartner announces five privacy trends from today to 2024
使用Karmada实现Helm应用的跨集群部署
Inspur network wins step by step
Yesterday, yuancosmos | meta's "yuancosmos" Department lost $2.96 billion in the first quarter, and Liufu jewelry issued Digital Collections
Noip popularization group 2006-2018 preliminary round 2019 csp-j1 2020 csp-j1 improvement program
Can Huawei become a "brother of lipstick" or a "Queen of goods"?
【Hot100】3. Longest substring without duplicate characters
Convolutional neural network for machine learning uses cifar10 data set and alexnet network model to train classification model, install labelimg, and report error
How to install WordPress on a web site
大型体育赛事与犯罪风险
WPF 视频硬解码渲染播放(无空域)(支持4K、8K、高帧率视频)
PotPlayer播放百度云盘视频