Option 1: SELECT DISTINCT. This is the most simple and straight forward, but also the most limited way: SELECT DISTINCT word, num FROM dupes ORDER BY word, num; /* word|num| ----|---| aaa |100| bbb |200| bbb |400| ccc |300| ddd |400| */ Option 2: GROUP BY. Grouping allows you to add aggregated data, like the min(id), max(id), count(*), etc:

Apr 5, 2019 · You can use the DISTINCT keyword within the COUNT aggregate function: SELECT COUNT(DISTINCT column_name) AS some_alias FROM table_name This will count only the distinct values for that column.

The DISTINCT operator is used in a SELECT statement to filter duplicate rows in the result set. It ensures that rows returned are unique for the column or columns specified in the SELECT clause. The following illustrates the syntax of the SELECT DISTINCT operator: SELECT DISTINCT column_1 FROM table; Code language: SQL (Structured Query ...

Inside a table, a column often contains many duplicate values; and sometimes you only want to list the different (distinct) values. Syntax SELECT DISTINCT column1 , column2, ...

Sep 20, 2016 · If you need to have the distinct values, you have to modify the sql_query param in your script as follows: EXECUTE IMMEDIATE sql_query := 'SELECT distinct '|| t.column_name || ' FROM ' || t.table_name ;

Apr 11, 2022 · I've the following table with values and want to get the unique values among the three columns. create table x (id number, c1 varchar2(20), c2 varchar2(20), c3 varchar2(20)); insert into x values (1, 'a','a,b,c', 'c,a,e,x'); insert into x values (2, 'b,x,y,c','a,b,c,x,z', 'y,m'); insert into x values (3, 'a,b,c','a,b,c', 'a,b,c');

Sep 23, 2023 · Thankfully, SQL provides several approaches to identify distinct or unique values within a column or a dataset. 1. DISTINCT keyword. One of the simplest and most commonly used methods is to use the DISTINCT keyword. This approach allows us to retrieve only unique values from a specified column or columns.

The Oracle DISTINCT keyword in the SELECT clause is used to eliminate duplicate rows and display a unique list of values. For example: let us assume we have a Customers table, which contains a list of customers from different cities: 40 customers from London, 30 from Liverpool and 30 from Manchester.

Mar 23, 2023 · In this example, we are going to use DISTINCT to find the unique values in a particular column of a table without having any conditions. As an example, we are going to find the unique values present in the vehicle column of the employee table.

Sep 24, 2023 · If you’re not familiar already, SELECT DISTINCT is a handy tool in our SQL arsenal that helps to return unique values within a database column. Here’s how we can use it in its simplest form: SELECT DISTINCT column_name FROM table_name;