sayan sarkar

Junior Analyst

Has solved a first real set of interview questions.

Practicing since October 20261-day streak

Points

365

Questions solved

16

Projects finished

0

Longest streak

1 days

Badges

• First question
• 10 questions

Skills

Skill map

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

• Query foundations

  Learning · 3 of 69

  Reading a table and asking it a straight question.

  • Dates1/16
  • Conditional logic0/12
  • Strings0/11
  • Calculations0/10
  • NULL handling1/9
  • Filtering0/7
  • Logical operators1/4

• Combining data

  Learning · 5 of 36

  Putting tables together without losing or duplicating rows.

  • Joins2/15
  • Reshaping0/15
  • Subqueries2/5
  • Deduplication1/1

• Aggregation and windows

  Learning · 7 of 71

  Summarizing, ranking and comparing rows against their group.

  • Window functions2/32
  • Ranking2/15
  • Aggregations2/14
  • Running totals1/10

• Python foundations

  Learning · 1 of 21

  The data structures every Python interview leans on.

  • Arrays1/6
  • 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

Certificates

• Junior Analyst

  Earned Nov 4, 2026

  Open certificate

Projects

No Data Labs projects posted yet.