Answers for "find if all rows of a column has null value sql"

how to check if a row is null in sql

--Checks both null and empty

SELECT * 
  FROM T
 WHERE NULLIF(some_col, ' ') IS NULL;

Posted by: Guest on October-06-2021

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;

Posted by: Guest on April-21-2021

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