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SQL Functions: COUNT(*) Explained

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SQL Functions: COUNT(*) Explained

The COUNT(*) SQL function counts all rows in a table or a result set. The SQL function is invoked like so: SELECT COUNT(*) FROM users; where "*" means all columns and "users" is the title of your table. COUNT(*) can also be applied to columns, but in that case, your database will ignore all NULL values. To apply COUNT(*) to a column, issue an ...

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