SIGNAL
A preview of the SIGNAL chapter in SQL Protocol. This page is a public description of the mission. Sign in to play the interactive level.
What this chapter covers
In the SIGNAL chapter, you will work through real SQL queries framed by the story beats of the mission. The concepts practiced here are listed on the subtitle above: INTRO - FIRST TRANSMISSION.
Every query you write runs against live tables. There are no multiple-choice questions. Progress is saved to your Google account, and XP from this chapter counts toward the global leaderboard.
How it fits the campaign
SQL Protocol presents its curriculum as a linked narrative: each chapter leaves you with one more primitive in your toolkit. By the end of the story campaign you will have written joins, aggregates, window functions, CTEs, and a full schema design, all inside the same covert-operative frame.
You do not need to follow the chapters in order; the hub lets you jump to any unlocked mission. Complete chapters unlock the next stage of the maze.
Play SIGNAL now
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