Best answer: How do I get unique values from a column in MySQL?

To get unique or distinct values of a column in MySQL Table, use the following SQL Query. SELECT DISTINCT(column_name) FROM your_table_name; You can select distinct values for one or more columns. The column names has to be separated with comma.

How do I get unique values in a column?

Filter for unique values or remove duplicate values

  1. To filter for unique values, click Data > Sort & Filter > Advanced.
  2. To remove duplicate values, click Data > Data Tools > Remove Duplicates.
  3. To highlight unique or duplicate values, use the Conditional Formatting command in the Style group on the Home tab.

How do I get unique records in MySQL?

You can use the DISTINCT command along with the SELECT statement to find out unique records available in a table. mysql> SELECT DISTINCT last_name, first_name -> FROM person_tbl -> ORDER BY last_name; An alternative to the DISTINCT command is to add a GROUP BY clause that names the columns you are selecting.

IT IS INTERESTING:  Can you obfuscate Java?

How can I get unique values from a column with repeated values in SQL?


The SELECT DISTINCT statement is used to return only distinct (different) values. Inside a table, a column often contains many duplicate values; and sometimes you only want to list the different (distinct) values.

How do I select distinct rows in MySQL?

The go to solution for removing duplicate rows from your result sets is to include the distinct keyword in your select statement. It tells the query engine to remove duplicates to produce a result set in which every row is unique. The group by clause can also be used to remove duplicates.

How do I find unique values in a column in Python?

Using the pandas dataframe nunique() function with default parameters gives a count of all the distinct values in each column. In the above example, the nunique() function returns a pandas Series with counts of distinct values in each column.

How do you eliminate duplicate rows in SQL query without distinct?

Below are alternate solutions :

  1. Remove Duplicates Using Row_Number. WITH CTE (Col1, Col2, Col3, DuplicateCount) AS ( SELECT Col1, Col2, Col3, ROW_NUMBER() OVER(PARTITION BY Col1, Col2, Col3 ORDER BY Col1) AS DuplicateCount FROM MyTable ) SELECT * from CTE Where DuplicateCount = 1.
  2. Remove Duplicates using group By.

Does MySQL have unique?

Introduction to the MySQL UNIQUE index

Luckily, MySQL provides another kind of index called UNIQUE index that allows you to enforce the uniqueness of values in one or more columns. Unlike the PRIMARY KEY index, you can have more than one UNIQUE index per table.

IT IS INTERESTING:  What is Except operator in SQL?

How do you insert unique rows in SQL?

Insert Distinct Column Value From One Table to Another Table in…

  1. INSERT INTO Manager(ManagerName)
  2. SELECT DISTINCT ManagerName.
  3. FROM Employee.
  4. WHERE ManagerName NOT IN(SELECT ManagerName FROM Manager);

How do I find unique records in a table?

Introduction to Oracle SELECT DISTINCT statement

SELECT DISTINCT column_1 FROM table; In this statement, the values in the column_1 of the table are compared to determine the duplicates. In this syntax, the combination of values in the column_1 , column_2 , and column_3 are used to determine the uniqueness of the data.

How do I get unique values from a column in SQL?


SELECT DISTINCT returns only unique (i.e. distinct) values. SELECT DISTINCT eliminates duplicate values from the results. DISTINCT can be used with aggregates: COUNT, AVG, MAX, etc. DISTINCT operates on a single column.

Can we use distinct in where clause?

WHERE conditions: The conditions may meet for the records which are selected and it is optional. Note: When one expression is provided in the DISTINCT clause then the query will return the unique values of the expressions.

Which SQL keyword is used to retrieve a maximum value?

MAX() is the SQL keyword is used to retrieve the maximum value in the selected column.

Secrets of programming