Interview question
Optimize a slow SQL query on a large fact table
Asked in Merck Software Engineer interviews
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46% candidates
Difficulty
Medium
Round
Technical Round
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Question 2 of 4
Optimize a slow SQL query on a large fact table
Medium57% Candidate ReportsCODINGMerckSoftware Engineer
Question
Optimize a slow SQL query on a large fact table
High-Level Approach
Measure first, index for filter/join columns, consider partitioning and summary tables.