SELECT id, name , email,
COUNT(id) AS NumOccurrences
FROM student_record
GROUP BY id, name, email
HAVING ( COUNT(id) > 1 );
- student_record is table name.
- id, name, email are column names.
- counting more than one occurrences for above column.
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apt quotation..
“A man should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.” by Robert A. Heinlein (author, aeronautical engineer, and naval officer)
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