A portfolio SQL project focused on data quality, batch-style validation, order fulfilment, reconciliation, and business reporting using the schema of the Brazilian E-Commerce Public Dataset by Olist.

This project focuses on analyzing retail sales data using MySQL. The objective of this project is to explore, clean, and analyze retail sales data and answer business-related questions using SQL ...

诡异的是，CREATE DATABASE 明明执行成功，库就躺在 information_schema.schemata 里，转头再用同一个 root 去访问，却被 MySQL 拦在门外。 这里的反直觉点有两个：建库成功不等于对库有操作权；root 也不等于万能，MySQL 眼里的 root 是 user 和 host 拼出来的组合身份。

本内容遵循CC 4.0 BY-SA版权协议 简介：这是一套基于JavaWeb的超市管理系统毕业设计项目，包含完整项目源码与数据库脚本。项目为个人毕设答辩作品，评审分达到98分，代码经过实际调试与测试 ...