Data Science & Analytics

Comparing Rows with LEAD and LAG

Learn to compare each order with neighboring rows, identify long purchase gaps, calculate month-over-month gross order-value growth, and analyze order-value trends within customer cohorts. By the end, you can combine CTEs with LAG and LEAD for time-based shop analysis.

SQL

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4 lessons

12 practices

2 hours

Exploratory Data Analysis

Course details

Comparing Orders with LAG

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Compare Order Status History

Compare Customer Signup History

Compare Customer Order History

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From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Comparing Rows with LEAD and LAG

Course details

Unit 13 practices26 min

Unit 23 practices26 min

Unit 33 practices26 min

Unit 43 practices26 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community