Based on the following query: SELECT P_CODE, SUM(LINE_UNITS) FROM LINE GROUP BY P_CODE HAVING SUM(LINE_UNITS) > (SELECT
Question:
Based on the following query:
SELECT P_CODE, SUM(LINE_UNITS)
FROM LINE
GROUP BY P_CODE
HAVING SUM(LINE_UNITS) > (SELECT MAX(LINE_UNITS) FROM LINE);
Should you create an index? If so, what would the index column(s) be, and why would you create that index? If not, explain your reasoning.
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Related Book For
Database Systems Design Implementation and Management
ISBN: 978-1337627900
13th edition
Authors: Carlos Coronel, Steven Morris
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