Rocket
Mini tools
▼ Most saved
Learn sql
Free mode
100% free
Freemium
Free Trial
-
341102106Released 9mo ago100% Free**SQL RANK() Function** ======================= The `RANK()` function in SQL is a window function that assigns a ranking to each row within a result set partition, based on a specific column or expression. The ranking is done in descending order by default. **Syntax** ```sql RANK() OVER ( [PARTITION BY column1, column2, ...] ORDER BY column1, column2, ... ) ``` **How it Works** ---------------- 1. The `PARTITION BY` clause divides the result set into partitions based on one or more columns. 2. The `ORDER BY` clause sorts the rows within each partition in descending order. 3. The `RANK()` function assigns a ranking to each row within each partition, based on the sorted order. **Example** ```sql SELECT employee_name, salary, RANK() OVER (ORDER BY salary DESC) as salary_rank FROM employees; ``` This query ranks employees by their salary in descending order. **Output** ```markdown +---------------+--------+-------------+ | employee_name | salary | salary_rank | +---------------+--------+-------------+ | John | 100000 | 1 | | Jane | 90000 | 2 | | Bob | 80000 | 3 | | Alice | 70000 | 4 | | Mike | 60000 | 5 | +---------------+--------+-------------+ ``` **Use Cases** ------------- 1. **Ranking sales performance**: Rank sales representatives by their sales amount in descending order. 2. **Identifying top performers**: Rank employees by their performance metrics, such as customer satisfaction or productivity. 3. **Analyzing student grades**: Rank students by their grades in descending order, to identify top performers. **Variations** -------------- * `DENSE_RANK()`: similar to `RANK()`, but does not skip ranking numbers if there are ties. * `ROW_NUMBER()`: assigns a unique number to each row within a partition, without considering ties. **Best Practices** ------------------ * Use `RANK()` and `DENSE_RANK()` judiciously, as they can affect query performance. * Consider using `ROW_NUMBER()` when you need to assign a unique identifier to each row.
Other tools
-
5,09150Released 1y agoFree + from $19/mof180338 Umar Mahmood🙏 7 karmaFeb 12, 2025@MonitrDoesn't support mongoDB and Firebase.
-
5,42247Released 2y agoFree + from $29/moGreat product, helps us to get insights from DB without involving developers.
-
11,51437Released 3y agoFree + from $7/mo
-
3,93637Released 2y ago100% FreeI have used this for several personal assistant applications and it works amazingly. Obviously it is still restricted to the flaws of any model you are using it with, but the ability to constrain prompts is incredibly helpful (especially when it comes to getting things like JSON format from the AI).
- Sponsor:Rocket - Vibe Coding
-
7,42731Released 3y agoFree + from $19/mo
-
5,34026Released 2y agoFree + from $100/yr
-
6,66924Released 2y agoFree + from $6/mo
-
4,06820Released 6y agoNo pricing
-
1,01319Released 1y agoNo pricingReally loved the concept to try out different databases with the Agent
-
4,94716Released 2y agoFree + from $149/moWorks really well, keeps context about your database schema and works directly with data to very quickly generate sql, datatables and visual graphs
-
4,25315Released 2y agoFrom $10/mo
-
1,10814Released 1y agoFree + from $59/yrIt is a Best platform to prepare for Digital SAT Exam.
- Didn't find the AI you were looking for?
-
2,89413Released 7mo agoFree + from $18.8/mo
-
1,70711Released 2y agoFree + from $6/mo
-
4897Released 1y agoFrom $1.99/mo
-
9566Released 1y agoFree + from $89.90/mo
-
3,0526Released 2y agoFrom $79/mo
-
9974Released 1y agoNo pricing
-
1,4922Released 2y agoFrom $25/mo
-
2977142Released 2y ago100% Free
-
1,0482139Released 2y ago100% Free
Post
