{"id":25181682,"url":"https://github.com/aaisha-nexus/sql_excel_project","last_synced_at":"2025-10-27T07:03:12.836Z","repository":{"id":276486278,"uuid":"929415696","full_name":"Aaisha-Nexus/SQL_Excel_Project","owner":"Aaisha-Nexus","description":"A data analysis project using MS SQL Server and Excel, focusing on database setup, querying, data cleaning, and visualization with PivotTables \u0026 Charts. 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I worked with **MS SQL Server** to set up a database, query data, and analyze sales trends using **Excel** for further data cleaning and visualization. \n\n## 🛠️ Technologies Used\n- **MS SQL Server** for database setup and querying\n- **Excel** for data manipulation and visualization\n- **PivotTables \u0026 Charts** for dynamic reporting\n- **SQL Queries** for data extraction and transformation\n\n## 🔍 Key Learnings\n### 1️⃣ Setting Up the Database \u0026 Querying in MS SQL Server\n- Downloaded and loaded data into **MS SQL Server**.\n- Transitioned from **PostgreSQL** to **MS SQL Server**, finding core SQL concepts transferable.\n\n### 2️⃣ Querying \u0026 Data Manipulation\n- Wrote SQL queries based on problem statements.\n- Used **CAST() function** for data type formatting.\n\n### 3️⃣ Real-World Mathematical Applications\n- Applied **percentage calculations, quarterly analysis, and financial KPIs** to sales data.\n\n### 4️⃣ Excel for Data Cleaning \u0026 Analysis\n- Used **PivotTables, formulas, and shortcuts** like:\n  - `CTRL + H` for bulk value replacement.\n  - `=TEXT(..., \"dddd\")` to extract day names from dates.\n  - `COUNTIF(range, criteria)` for counting occurrences.\n  - `1/COUNTIF(...)` for simulating distinct counts.\n- Discovered workarounds for **PivotTable limitations** (e.g., lack of distinct count function).\n\n### 5️⃣ Data Visualization \u0026 Dashboard Creation\n- Created **PivotCharts** for insights.\n- Faced and resolved **Funnel Chart limitations** by creating a separate data table.\n- Used **Slicers** for dynamic report filtering based on months and quarters.\n\n\n---\n### ⭐ Connect \u0026 Feedback\nFeel free to check out my work and suggest improvements! 🚀\n\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Faaisha-nexus%2Fsql_excel_project","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Faaisha-nexus%2Fsql_excel_project","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Faaisha-nexus%2Fsql_excel_project/lists"}