Samdeck8411 Samdeck8411
  • 13-03-2024
  • Computers and Technology
contestada

Say we have student tables A (ID, names), B (ID, names, GPA), C (ID, names, Major), and their number of records are 100, 10k, 2887 separately. A query wants to find the names of students who exist in all 3 tables and have GPA > 3. Which sub-query shall we run first?
1) Find GPA > 3 records in B
2) Find unique records in A

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