count query sql code example
Example 1: sql count
/*COUNT(column_name) will return the number of rows from the column
that are not NULL*/
SELECT COUNT(column_name)
FROM table_name;
/*COUNT(*) will return the number of rows from the table*/
SELECT COUNT(*)
FROM table_name;
Example 2: sql count(*)
SELECT COUNT(column_name)
FROM table_name
WHERE condition;