https://www.postgresql.org/docs/9.6/static/functions-json.html PostgreSQL 9.6.1 Documentation Prev Up Chapter 9. Functions and Operators Next 9.15. JSON Functions and Operators Table 9-42 shows the operators that are available for use with the two JS…
a detailed website about json sql query; official website: here, chinese version: here Json query: ->element_name or index; and can be sequential; select column::json->'element' as readdata from schema.tableName; select column1::json->'element1'…
原文:Scaling Our Analytical Processing Service: Sharding a PostgreSQL Database with Citus 在线广告商正在根据绩效数据做出越来越多的决策. 无论是选择要投资的受众或创意,还是启用广告活动预算的算法优化,决策越来越依赖于随时可用的数据. 我们的开发团队构建了强大的工具来帮助我们的客户分析性能数据并做出更好的决策. 我们的解决方案由高度可定制的报告组成,包括由我们自己的极其灵活的查询语言提供支持的下钻表和图表.支持查…
Reference: https://impythonist.wordpress.com/2016/02/21/building-high-performance-django-systems/ The main motto of Django web framework is: The web framework for perfectionists with deadlines It is true. Django always gives a polished product within…