Web Reference: The behavior of COUNT() depends on the argument used within the parentheses: COUNT(*) - Counts the total number of rows in a table (including NULL values). COUNT(columnname) - Counts all non-null values in the column. COUNT(DISTINCT columnname) - Counts only the unique, non-null values in the column. Nov 22, 2025 · We can use the COUNT () function along with CASE WHEN to count rows that match a specific condition. This is helpful when we want to count rows based on certain criteria without filtering the rows out of the result set. This tutorial shows you how to use the SQL COUNT () function to get the number of rows in a table.
YouTube Excerpt: Follow this step by step easy tutorial to see how we can
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