Omar Abdalltif Mashal

Intern

Practicing since October 20261-day streak

Points

175

Questions solved

0

Projects finished

1

Longest streak

1 days

Badges

• First project

Skill map

Every topic in the question bank, and how much of each one Omar has worked through.

• Query foundations

  Not started · 0 of 64

  Reading a table and asking it a straight question.

  • Dates0/16
  • Conditional logic0/12
  • Strings0/11
  • NULL handling0/9
  • Filtering0/7
  • Calculations0/5
  • Logical operators0/4

• Combining data

  Not started · 0 of 36

  Putting tables together without losing or duplicating rows.

  • Joins0/15
  • Reshaping0/15
  • Subqueries0/5
  • Deduplication0/1

• Aggregation and windows

  Not started · 0 of 71

  Summarizing, ranking and comparing rows against their group.

  • Window functions0/32
  • Ranking0/15
  • Aggregations0/14
  • Running totals0/10

• Python foundations

  Not started · 0 of 21

  The data structures every Python interview leans on.

  • Arrays0/6
  • Lists0/5
  • Tuples0/3
  • Dictionaries0/3
  • Math0/3
  • Sorting0/1

• Algorithms

  Not started · 0 of 17

  The patterns behind the timed screening rounds.

  • Hashing0/8
  • Two pointers0/4
  • Binary search0/4
  • Sliding window0/1

Projects

• Peloton · Data Analytics Project · mediumCustomer Churn Analysis

  Find out why subscribers of a fitness app cancel, and give leadership an evidence-backed plan to keep them.

  Project pageCode