DoorDash practice guide
Stay inside one business context for a few reps in a row while still working from the same live bank used across practice, tracks, and reviews.
DoorDash
Explore 6 DoorDash-tagged SQL scenarios focused on query basics, aggregation, filtering.
Context, not signal
Company labels help frame practice in a familiar business context. They are directional study aids, not official interview guidance from the companies listed.
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Questions
6
Estimated prep time
110 min
Progress tracking
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Concept focus
The most common patterns in the current DoorDash-tagged set.
Query basics
6
Aggregation
2
Filtering
2
Date functions
1
Mix at a glance
Use the difficulty and path mix to decide whether you want fundamentals, breadth, or stretch reps.
Suggested rhythm
Start with the easiest scenario in the set, then move upward while tracking accuracy and retry speed. This keeps the context stable while the difficulty rises.
Suggested next scenarios
The next best reps from this company-tagged set based on what you have not solved yet.
Stockout Days by Warehouse
Practice query basics through a DoorDash-tagged business scenario.
Duplicate Delivery Role Posts
Practice query basics through a DoorDash-tagged business scenario.
Frequent Support Callers
Practice query basics through a DoorDash-tagged business scenario.
Question list
The current DoorDash-tagged list with learning objectives and your latest status.
Stockout Days by Warehouse
The inventory team wants to know which warehouses experienced stockouts in July 2024. Return warehouse_id and the number of stockout_days where units_on_hand...
Practice query basics through a DoorDash-tagged business scenario.
Duplicate Delivery Role Posts
Delivery operations wants a monthly cleanup report for employers that recycled the same role posting. Looking only at April 2024, return one value named empl...
Practice query basics through a DoorDash-tagged business scenario.
Frequent Support Callers
DoorDash is reviewing frequent support callers through a operations review. Return the distinct policy_holder_id values for members who made at least 3 calls...
Practice query basics through a DoorDash-tagged business scenario.
Creators With Multiple 2024 Posts
DoorDash is reviewing creators with multiple 2024 posts through a coverage report. Return each creator_id that posted at least two items in 2024. Sort by cre...
Practice query basics through a DoorDash-tagged business scenario.
2024 App Click Volume
DoorDash is reviewing 2024 app click volume through a monthly brief. Return each app_id and the total number of click events recorded in 2024. Sort by app_id.
Practice query basics through a DoorDash-tagged business scenario.
Monthly Reactivated Users
DoorDash wants a planning note for monthly reactivated users. Count how many users logged in during a month after being inactive in the previous month. Retur...
Practice query basics through a DoorDash-tagged business scenario.