Select all unique values in column sql

There are many different reasons that one may have for requesting unique values from fields. Beginning to explore SQL queries? Select distinct values from column. Ask Question Asked years, months ago. This is how you can select from a table with only unique values for your column.

SQL Server select distinct latest values. MySQL: Ignore a selected column when using DISTINCT. Example - Finding Unique Values in Multiple Columns. The UNIQUE constraint ensures that all values in a column are different.

Both the UNIQUE and PRIMARY KEY constraints provide a guarantee for uniqueness for a column or set of columns. A PRIMARY KEY constraint automatically has a UNIQUE constraint. But here I have modified with some little logic and fuond from the plan its ok and tested too. But I want a single column to have distinct values. I just needed to omit those non-duplicate valued.

SELECT DISTINCT eliminates duplicate records from the. A table with four columns - PLANT, No_Of_Parts, Part_Val, Rec_ID - has records as below. How do I construct a SQL command to perform a DISTINCT such that only unique PLANT plus NO_OF_PARTS plus unique combination of PART_VAL values for the SAME PLANT and NO_OF_PARTS combination value? The query returns the unique combination of bcolor and fcolor from the ttable.

Notice that the ttable has two rows with red value in both bcolor and fcolor columns. The DISTINCT keyword can be used to return only distinct (different) values. Using SQL DISTINCT for viewing unique values. Are you familiar with the difference? The query uses the combination of values in all specified columns in the SELECT list to evaluate the uniqueness.

If you apply the DISTINCT clause to a column that has NULL, the DISTINCT clause will keep only one NULL and eliminates the other. In other words, the DISTINCT clause treats all NULL “values” as the same value. Often your will include many duplicate values. If you want to select all the unique values from a column , you can use the DISTINCT keyword. You can use the DISTINCT clause with more than one column.

In this case, MySQL uses the combination of values in these columns to determine the uniqueness of the row in the result set. The SELECT clause specifies the columns of the final result table. The select list is a list of names and expressions specified in the SELECT clause, and R is the result of the previous operation of the subselect. Filter for unique values , remove duplicate values , and conditionally format unique or duplicate values in Excel. To quickly clear all columns, click Unselect All.

For more information, see TOP (Transact- SQL ). The select list is a series of expressions separated by commas. The columns to be selected for the result set. Specifies that all columns from all tables and views in the FROM clause should be returned.

Does anyone know how to do this? If you have not understood what I am going to talk in this blog post by just reading the title, I think you are a normal human like me. Actually, there is no difference between DISTINCT and UNIQUE. SELECT UNIQUE is an old syntax which was used in oracle description but later ANSI standard defines DISTINCT as the official keyword.

After that oracle also added DISTINCT but did not withdraw the service of UNIQUE keyword for the sake of backward compatibility. Multiple messageboard posts can have the same ThreadI such as replies to a post.