[Wong]

For SQL, we can extract all column names from information_schema. Then concatenate the column names with ‘IS NULL’ in where clause to get the number.

SET @query = CONCAT(        
'SELECT COUNT(*) FROM sakila.staff WHERE CONCAT(',
  (SELECT GROUP_CONCAT(COLUMN_NAME)
	FROM information_schema.COLUMNS
	WHERE TABLE_SCHEMA = 'sakila' AND  
TABLE_NAME = 'staff'),
        ') IS NULL');
PREPARE CHECK_NULL from @query;
EXECUTE CHECK_NULL;  

• This reply was modified 3 years, 3 months ago by  Wong.

[Wong]

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<div>The table name string can be found here:

<h3>Entrepreneur Immigration</h3>\r\n\r\n<table align="center"

</div>

We can use ‘table align’ as key word to look for it.