HOW TO
If you're familiar with Pivot Tables in Excel, you know how powerful they are for summarizing and analyzing data. Pivoting transforms long rows of data into a compact format with values displayed across columns — making insights easier to see and share.
But what if your data lives in a SQL database?
Thankfully, SQL supports similar functionality — commonly called a SQL Pivot Table Query. Whether through native PIVOT
syntax (in SQL Server) or more widely supported CASE + aggregation methods, you can transform rows into columns.
And with the help of AI-powered tools like AI2sql, even non-technical users can build pivot queries with zero SQL knowledge.
In this guide, you’ll learn:
Why pivoting data matters
How to write a
PIVOT
query (especially in SQL Server)How to use
CASE
to pivot across any SQL dialectA much faster, easier alternative using AI2sql
Why Pivot Data in SQL?
Pivoting is useful when you need to:
🔍 Improve readability by displaying data across columns
📊 Create reports with categories as columns (e.g., sales per year)
📈 Prepare data for visualizations or BI tools
📉 Summarize metrics similar to spreadsheet pivot tables
The Core Challenge: Rows to Columns
The goal of any SQL pivot query is to:
Take unique values from one column
Convert them into column headers
Aggregate corresponding values from another column
This transformation is commonly called SQL Pivot Rows to Columns.
Using the PIVOT
Operator (SQL Server)
Let’s say you have the following Sales
table:
Product | SaleYear | Amount |
---|---|---|
Apple | 2022 | 100 |
Banana | 2022 | 50 |
Apple | 2023 | 120 |
Orange | 2022 | 75 |
Banana | 2023 | 60 |
Apple | 2024 | 150 |
You want a table with products as rows and years as columns. Here's how to do it using the SQL Server PIVOT
syntax:
Breaking Down the PIVOT
Query
SUM(Amount)
: Aggregation functionFOR SaleYear
: Column you want to pivotIN ([2022], [2023], [2024])
: The values to turn into new columns
Output:
Product | 2022 | 2023 | 2024 |
---|---|---|---|
Apple | 100 | 120 | 150 |
Banana | 50 | 60 | NULL |
Orange | 75 | NULL | NULL |
✅ Powerful, but only supported by some databases (like SQL Server).
The Manual Method: Conditional Aggregation with CASE
If your database doesn’t support PIVOT
, you can use CASE
+ aggregation:
Drawbacks of the Manual Way
🧾 Verbose: One line per pivot value
🧠 Error-prone: Easy to make typos
🛠️ Hard to maintain: Need to update when new values appear
Still, it works across all SQL dialects — PostgreSQL, MySQL, SQL Server, BigQuery, etc.
The Easy Way: Use AI2sql to Generate Pivot Queries
What if you could just type:
"Pivot the Sales table showing total Amount by Product for years 2022 to 2024"
…and get the correct query instantly?
That’s what AI2sql does.
How AI2sql Works
You enter a natural language request
AI2sql interprets it
It generates the exact SQL you need —
PIVOT
orCASE
depending on your database
🎯 You don’t have to memorize SQL syntax or worry about formatting.
Why Use AI2sql for Pivot Queries?
✅ Simple – Describe what you need
✅ Fast – Save time writing long queries
✅ Accurate – Reduce typos and mistakes
✅ Versatile – Supports multiple SQL dialects
✅ Learning-friendly – See the SQL, and learn as you go
Conclusion: Pivoting Made Easy
Transforming rows into columns is a common reporting task, whether you’re tracking sales by month, users by status, or events by category.
You can:
Use the
PIVOT
operator (SQL Server only)Use
CASE WHEN
logic (works everywhere)Or use AI2sql and get it done in seconds — no SQL required
Stop Wrestling with Complex Pivot Syntax
Try AI2sql’s free trial and see how easily you can generate SQL Pivot queries — and much more — just by asking in plain English.