357. Find Missing Dates in Orders

Hard TCS Real-World Scenarios

Query Rules

The query columns and order must match the expected result schema.
NULL values should be handled appropriately where applicable.
The grader compares output values and sorting order to evaluate.

Schema Browser

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locations

3 cols

departments

3 cols

employees

6 cols

orders

6 cols

Reference Solution

Expected SQL

WITH RECURSIVE date_range(d) AS (SELECT MIN(order_date) FROM orders UNION ALL SELECT DATE(d, '+1 day') FROM date_range WHERE d < (SELECT MAX(order_date) FROM orders)) SELECT d AS missing_date FROM date_range WHERE d NOT IN (SELECT DISTINCT order_date FROM orders);

SQL Editor

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Console Output

Console Terminal

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