Db2 select distinct

If you want to select distinct values of some columns in the select list, you should use the GROUP BY clause. We will use the authors table from the sample database for the demonstration. At least in DB, you can execute.

If you do that, you can either use select distinct or group by. The column values are produced by the application of the select list to R. Otherwise, the predicate is false.

The result cannot be unknown. SQL HOME SQL Intro SQL Syntax SQL Select SQL Select Distinct SQL Where SQL An Or, Not SQL Order By SQL Insert Into SQL Null Values SQL Update SQL Delete SQL Select Top SQL Min and Max SQL Count, Avg, Sum SQL Like SQL Wildcards SQL In SQL Between SQL Aliases SQL Joins SQL Inner Join SQL Left Join SQL Right Join SQL Full Join SQL Self Join SQL. The function is applied to the set of values derived from the argument values by the elimination of null values. Vorteil: einfach zu nutzen, z. Abfragen (nested selects). I cannot get the distinct values of just one column using.

Viewed 178k times 29. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc. I need to query an SQL database to find all distinct values of one column and I need an arbitrary val.

Ask Question Asked years, months ago. Cette commande peut potentiellement afficher des lignes en doubles. We’ll use the books table from the sample database to demonstrate the SUM() function. For the demonstration, we will use the customers table from the sample database. Summary: in this tutorial, you will learn how to use the DbLISTAGG() function to aggregate a set of strings into a single string by concatenating strings.

Introduction to DbLISTAGG() function. The LISTAGG() function aggregates a set of strings into a single string by concatenating the strings with an optional separator between strings. How to select distinct for one column and any in another column?

These are the. A_NAME FROM ARTIKEL As A UNION SELECT B. If the SELECT clause contains more than one fiel the combination of values from all fields must be unique for a given record to be included in the. I need to select one of each version in the data (using the code field) while keeping all the columns in the final output. The issue is with this line. Person ORDER BY LastName.

Because of this you must keep in min when using ORDER BY, that the ORDER BY items must appear in the select list when using Distinct. The trick is to first aggregate the rows into an XML document, and then use the XPath 2. DBDatabase Forums on Bytes. How can I select all fields with a distinct on only one field of that table?

An example of a failing query containing multiple distinct groups is as follows.

Well the title says it all.