How would you rate your SQL query writing skills on a 10-point scale? How often do you use SQL in your work?

The assessment of SQL query writing skills depends on the proficiency level:

• 1-3: basic SELECT queries, WHERE filtering, simple JOINs.
• 4-6: complex JOINs, aggregate functions, subqueries.
• 7-8: query optimization, indexes, transactions.
• 9-10: writing complex stored procedures, triggers, deep optimization, and working with large volumes of data.

The frequency of SQL use at work can vary from daily (e.g., analytics, development) to rare (e.g., testing).

Example answer:

"I rate my skill at 7 out of 10, regularly using SQL to write complex queries with multiple JOINs and subqueries, as well as for data analysis in the database."