Solution to LeetCode 3 Longest Substring Without Repeating Characters, LeetCode 438 Find All Anagrams in a String, and L

The following basic-level SQL problems are about ‘subquery’. LeetCode 1045Customers Who Bought All Products (Medium) [li

The following basic-level SQL problems are about ‘inequality linking’. LeetCode 180Consecutive Numbers (Medium) [link] T

The following basic-level SQL problems are about ‘inequality linking’. LeetCode 181Employees Earning More Than Their Man

Solution to LeetCode 167 Two Sum II - Input Array Is Sorted, LeetCode 189 Rotate Array, LeetCode 283 Move Zeros, LeetCod

The following basic-level SQL problems are about ‘linking’. More: MOD LeetCode 626Exchange Seats (Medium) [link] Using C

The following basic-level SQL problems are about ‘linking’. LeetCode 184Department Highest Salary (Medium) [link] Using

The following basic-level SQL problems are about ‘linking’. LeetCode 619Biggest Single Number (Easy) [link] SELECT(

Solution to LeetCode 278 First Bad Version, LeetCode 374 Guess Number Higher or Lower, LeetCode 704 Binary Search, and L

The following basic-level SQL problems are about ‘Function’. Summarizing values by using SUM, AVG, with IF or conditions

The following basic-level SQL problems are about ‘Function’. e.g. SUM() with IF conditions. LeetCode 1251Average Selling

The following advanced-level SQL problems are about ‘Summary Function’. More: using LEFT to slice the string. LeetCode