TheAnalyst / SQLAll lessons ↗
Day 6 · Core SQL · 10–20 minutes

Date filtering

Dates stored as ISO strings can be compared chronologically in SQLite.

01 · Learn

The idea

Dates stored as ISO strings can be compared chronologically in SQLite. Read the query line by line and identify the input table, the transformation, and the shape of the result before running it.

SELECT order_id, order_date FROM orders WHERE order_date >= '2026-02-01' ORDER BY order_date;
Read it actively

Before running the example, predict the output columns and whether the query returns one row, many rows, or possibly no rows.

02 · Recall

Explain it without looking

In your own words, explain the main SQL feature in today’s lesson and why it answers the question.

03 · Solve

Run your own query

Return orders placed on or after 1 February 2026, oldest first.

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04 · Repeat

Close the loop