DISTINCT works to select a distinct combination of all the columns you selected. In this case, the combination "item1,data1" and "item1,data2" are two completely different combinations of the …

Sep 10, 2008 · The problem with your query is that when using a GROUP BY clause (which you essentially do by using distinct) you can only use columns that you group by or aggregate …

The problem is that the columns used in the ORDER BY aren't specified in the DISTINCT. To do this, you need to use an aggregate function to sort on, and use a GROUP BY to make the …

May 25, 2011 · SELECT DISTINCT FIELD1, FIELD2, FIELD3 FROM TABLE1 works if the values of all three columns are unique in the table. If, for example, you have multiple identical values …

I want to use DISTINCT and TOP in the same query. I tried SELECT DISTINCT TOP 10 * FROM TableA but I still have a duplicate personID, so I tought to do: SELECT DISTINCT (personID) …

Feb 19, 2017 · SELECT DISTINCT TOP 1 ID, Email, ProductName, ProductModel FROM Products ORDER BY ID DESC The TOP 1 will return only the first record, by ordering it by the …

Sep 25, 2018 · 6 The DISTINCT clause filters out FULL DUPLICATE ROWS. It goes right after the SELECT keyword, since it applies to the entire row, not single columns. You cannot use it …

In the table, one customer like John Smith can have multiple addresses. I need the SELECT query for this table to return only first row found where there are duplicates in 'CName'. For …

Is there any purpose for using both DISTINCT and GROUP BY in SQL? Below is a sample code SELECT DISTINCT Actors FROM MovieDetails GROUP BY Actors Does anyone know of any …

455 I can select all the distinct values in a column in the following ways: SELECT DISTINCT column_name FROM table_name; SELECT column_name FROM table_name GROUP BY …