SQL is still the connective tissue of every modern data stack—from cloud warehouses to mobile apps. Recruiters know it, too: employer demand for SQL skills grew 46% year-over-year, according to labour ...
-- ***Q.5 Write a SQL query to calculate the average sale for each month. find out best selling month in each year. -- ***Q.6 Write a SQL query to find the number of unique customers who purchased ...
Your output will differ based on the book you chose. You should see 13 rows total, with your new book appearing at the end with book_id = 13 and available = true.
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