Sql Count Case When

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Sql Count Case When

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2 Answers Sorted by 111 Use SELECT SUM CASE WHEN t your column IS NULL THEN 1 ELSE 0 END AS numNull SUM CASE WHEN t your column IS NOT NULL THEN 1 ELSE 0 END AS numNotNull FROM YOUR TABLE t That will sum up the column NULL not NULL for the entire table It s likely you need a GROUP BY clause depending on needs Share The COUNT CASE WHEN condition THEN column END syntax allows us to count the number of values that fulfill conditions COUNT used with GROUP BY is useful for counting the number of rows that belong to each group COUNT used with HAVING is useful for filtering groups according to the number of rows they have

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