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Count Data By Using Query. On the Create tab in the Other group click Query Design. If you use mysql u have as like i did.
Internally count method uses EntityMangers createQuery method. Returns the count of documents that would match a find query for the collection or view. Use the Count function in a query expression instead of the DCount function and set optional criteria to enforce any restrictions on the results.
The SQL COUNT function is an aggregate function that returns the number of rows returned by a query.
SELECT SELECT COUNT FROM employees AS Total_Employees SELECT COUNT FROM departments AS No_Of_Departments FROM dual Output. Use the Count function in a query expression instead of the DCount function and set optional criteria to enforce any restrictions on the results. Hide a Total row. COUNT does not support DISTINCT and takes no parameters.