mysql get count of rows
SELECT COUNT(*) FROM my_table; SELECT COUNT(*) FROM my_table WHERE my_column IS NULL; SELECT COUNT(*) FROM my_table WHERE my_column = 'my_value'; SELECT COUNT(DISTINCT tel) gender_count, COUNT(DISTINCT CASE WHEN gender = 'male' THEN tel END) male_count, COUNT(DISTINCT CASE WHEN gender = 'female' THEN tel END) female_count FROM people;