How do you count distinct in access query?
Subsequently, one may also ask, how do you count distinct in access?
Some database systems support aggregate functions which can directly count distinct values in one query. Access does not support such a function, so you must first write a query which gets distinct values for the Site column. A query can always refer to another query in the same manner it refers to a table.
Besides, how use distinct and count in SQL query?
SQL SELECT DISTINCT Statement
- SELECT DISTINCT returns only distinct (different) values.
- SELECT DISTINCT eliminates duplicate records from the results.
- DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc.
- DISTINCT operates on a single column. DISTINCT for multiple columns is not supported.
Counting all of the Rows in a Table. To counts all of the rows in a table, whether they contain NULL values or not, use COUNT(*). That form of the COUNT() function basically returns the number of rows in a result set returned by a SELECT statement.