Answers for "number of rows count in mysql"

SQL
3

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;
Posted by: Guest on April-20-2021
0

mysql count rows returned

select count(*) from (select * from foo) as x;
Posted by: Guest on August-26-2021

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