CURRENT_DATE & CURRENT_TIME

Concepts covered: sqlCurrentDate

This function is your go-to tool for queries that need to reference "today" without hardcoding dates. CURRENT_DATE Usage Patterns Basic Usage The result reflects whatever date the query executes. Running this query tomorrow returns tomorrow's date. This dynamic behavior is essential for queries that need to stay current without manual updates. Filtering Recent Data This query finds all orders placed today. The filter automatically adjusts as days pass. Tomorrow, the same query returns only tomorrow's orders. Building Dynamic Reports The report always shows today's data without requiring parameter changes. Scheduled reports using this pattern stay current automatically. When to Use CURRENT_DATE CURRENT_TIME Time Function Time-Based Filtering You can filter records based on time-of-day compa

About This Interactive Section

This section is part of the Dates: Beginner lesson on DataDriven, a free data engineering interview prep platform. Each section includes explanations, worked examples, and hands-on code challenges that execute in real time. SQL queries run against a live PostgreSQL database. Python runs in a sandboxed Docker container. Data modeling problems validate against interactive schema canvases. All content is framed around what data engineering interviewers actually test at companies like Meta, Google, Amazon, Netflix, Stripe, and Databricks.

How DataDriven Lessons Work

DataDriven combines four interview rounds (SQL, Python, Data Modeling, Pipeline Architecture) with adaptive difficulty and spaced repetition. Easy problems get harder as you improve. Weak concepts resurface until you master them. Your readiness score tracks progress across every topic interviewers test. Every lesson section ends with problems you solve by writing and running real code, not by picking multiple-choice answers.