Learning paths
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Move step by step through the SQL, Excel and Python paths: each puzzle practices a new idea and each module ends with an exam and its certificate.
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💡 Curious
Next title: 📘 Apprentice · 0/100 XP
SQL · Module 1 · Beginner
SQL Fundamentals
Queries on a single table: choosing columns, filtering, sorting and counting.
0 of 10 · 0%
PUZZLE 002
The missing microscope
WHERE · +50 XP
PUZZLE 003
The basement door
AND · IS NULL · +75 XP
PUZZLE 004
Night calls
IN · BETWEEN · +75 XP
PUZZLE 005
The mysterious alias
LIKE · +75 XP
PUZZLE 006
The podium
ORDER BY · LIMIT · +100 XP
PUZZLE 007
The smoke alarm
COUNT · +100 XP
PUZZLE 008
The library patron
GROUP BY · +125 XP
REVIEW 009
Review: the inventory
Module review · +100 XP
EXAM 010
Exam: SQL Fundamentals
Exam · +250 XP
Module 2 · Summarize and clean
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