SQL-Learning-Journey

TSQL

🚀 A curated collection of SQL mini challenges designed to strengthen your database querying skills. This repository includes weekly exercises focused on real-world scenarios, ideal for beginners and intermediate learners aiming to master SQL through hands-on practice.

Last updated Nov 2, 2025

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#data-analysis #database #mini-challenge #sql #sql-query #t-sql

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README

A collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Database

| | | ------- | | 0181-employees-earning-more-than-their-managers | | 0182-duplicate-emails | | 0183-customers-who-never-order | | 0196-delete-duplicate-emails | | 0607-sales-person | | 0610-triangle-judgement | | 0620-not-boring-movies | | 0627-swap-salary | | 1245-user-activity-for-the-past-30-days-i |

Array

| | | ------- | | 0031-next-permutation | | 0088-merge-sorted-array | | 0792-binary-search | | 1018-largest-perimeter-triangle | | 1878-check-if-array-is-sorted-and-rotated |

Two Pointers

| | | ------- | | 0031-next-permutation | | 0088-merge-sorted-array | | 0142-linked-list-cycle-ii | | 0234-palindrome-linked-list |

Math

| | | ------- | | 0326-power-of-three | | 1013-fibonacci-number | | 1018-largest-perimeter-triangle |

Dynamic Programming

| | | ------- | | 1013-fibonacci-number |

Recursion

| | | ------- | | 0234-palindrome-linked-list | | 0326-power-of-three | | 1013-fibonacci-number |

Memoization

| | | ------- | | 1013-fibonacci-number |

Binary Search

| | | ------- | | 0792-binary-search |

Sorting

| | | ------- | | 0088-merge-sorted-array | | 1018-largest-perimeter-triangle |

Greedy

| | | ------- | | 1018-largest-perimeter-triangle |

Linked List

| | | ------- | | 0142-linked-list-cycle-ii | | 0234-palindrome-linked-list |

Stack

| | | ------- | | 0234-palindrome-linked-list |

Hash Table

| | | ------- | | 0142-linked-list-cycle-ii |

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