SQL Analyst · LAG

Compare each month to the previous one — omnichannel sales

Compare each month to the previous one using an omnichannel sales dataset designed to control the level of detail and variances.

SQL Essentials

Unlock this exercise and continue the path.

Compare each month to the previous one — omnichannel sales is part of the complete programme: 20 lessons, 180 verifiable exercises and 8 published guided projects.

  • Complete content with explained examples
  • SQL simulator and expected result
  • Detailed answer, common mistakes and challenge
View SQL EssentialsI already have access
Six-month access, one-time payment and no automatic renewal.
Compare each month to the previous one — omnichannel sales — SQL exercise — SQL.tn