This question falls under the Data Analysis domain, focusing on SQL query correction. The query uses an aggregate function (SUM) but has two issues: it uses 'SORT BY' (incorrect syntax) and lacks a GROUP BY clause for non-aggregated columns.
The query selects firstName, lastName, and SUM(income), but firstName and lastName are not aggregated, requiring a GROUP BY clause.
'SORT BY' is incorrect; the correct syntax is 'ORDER BY.'
Option A: SELECT firstName, lastName, SUM(income) FROM companyRoster HAVING SUM(income) > 10000000
This adds a HAVING clause but doesn't fix the GROUP BY issue, so it's still invalid.
Option B: SELECT firstName, lastName, SUM(income) FROM companyRoster GROUP BY firstName, lastName
This adds the required GROUP BY clause for firstName and lastName, fixing the aggregation error. While it removes the ORDER BY, the query will run without it, addressing the primary error.
Option C: SELECT firstName, lastName, SUM(income) FROM companyRoster ORDER BY firstName, income
This fixes 'SORT BY' to 'ORDER BY' but doesn't address the missing GROUP BY, so the query remains invalid.
Option D: SELECT firstName, lastName, SUM(income) FROM companyRoster
This removes the ORDER BY but still lacks the GROUP BY clause, making it invalid.
The DA0-002 Data Analysis domain includes 'applying the appropriate descriptive statistical methods using SQL queries,' and adding GROUP BY fixes the aggregation error, allowing the query to run.
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