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updated SQL 50 Badge #59

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Jul 9, 2025
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updated SQL 50 Badge #59

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39 changes: 32 additions & 7 deletions README.md
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Expand Up @@ -4,6 +4,14 @@
[![MIT licensed](https://img.shields.io/badge/License-MIT-yellow.svg)](./LICENSE)
[![CI](https://github.com/ivanbyone/leetcode-sql/actions/workflows/ci.yml/badge.svg)](https://github.com/Ivanbyone/leetcode-sql//actions)

## Navigation

- [Description](#description)
- [SQL 50](#sql-50-questions)
- [Task list](#task-list)
- [Contributing](#contributing)
- [License](#license)

## Description

📚 LeetCode SQL Solutions in PostgreSQL
Expand All @@ -20,16 +28,22 @@ A collection of LeetCode solutions in SQL using PostgreSQL. Includes:

Useful for preparing for technical interviews and improving your SQL skills.

### Contributing
## SQL 50 Questions

Style guide for contributors:
![SQL 50 Badge](./public/sql-50.GIF)

1. Add description to all tasks from Leetcode.
2. Name file pattern: xxx.Task name.sql
3. All keywords must be uppercase.
4. For every task create new branch with pattern: task/task-name -> make PR to main.
### Select

- [595. Big Countries](./leetcode/easy/595.%20Big%20Countries.sql)
- [1148. Article Views I](./leetcode/easy/1148.%20Article%20Views%20I.sql)
- [1683. Invalid Tweets](./leetcode/easy/1683.%20Invalid%20Tweets.sql)

### Basic Joins

Have a good contributing!
- [1378. Replace Employee ID With The Unique Identifier](./leetcode/easy/1378.%20Replace%20Employee%20ID%20With%20The%20Unique%20Identifier.sql)
- [1068. Product Sales Analysis I](./leetcode/easy/1068.%20Product%20Sales%20Analysis%20I.sql)
- [1581. Customer Who Visited but Did Not Make Any Transactions](./leetcode/easy/1581.%20Customer%20Who%20Visited%20but%20Did%20Not%20Make%20Any%20Transactions.sql)
- [197. Rising Temperature](./leetcode/easy/197.%20Rising%20Temperature.sql)

## Task List

Expand Down Expand Up @@ -100,6 +114,17 @@ Have a good contributing!
3. [Hard](./leetcode/hard/)
- [185. Department Top Three Salaries](./leetcode/hard/185.%20Department%20Top%20Three%20Salaries.sql)

## Contributing

Style guide for contributors:

1. Add description to all tasks from Leetcode.
2. Name file pattern: xxx.Task name.sql
3. All keywords must be uppercase.
4. For every task create new branch with pattern: task/task-name -> make PR to main.

Have a good contributing!

## License

Check out LICENSE [page](./LICENSE).
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