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Get count of null in column sql

Sql count null values in all columns

SELECT sum(CASE WHEN column_A IS NULL THEN 1 ELSE 0 END) A,
       sum(CASE WHEN column_B IS NULL THEN 1 ELSE 0 END) B
FROM my_table;

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How to count null values in sql

SELECT COUNT(1) FROM my_table WHERE my_column IS NULL;

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Get count of null in column sql

select sum(case when a is null then 1 else 0 end) count_nulls
     , count(a) count_not_nulls 
  from us;

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Source: stackoverflow.com

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