How Do I Delete Duplicates But Keep One?

How do I delete duplicate rows but keep one?

First, the CTE uses the ROW_NUMBER() function to find the duplicate rows specified by values in the first_name , last_name , and email columns.

Then, the DELETE statement deletes all the duplicate rows but keeps only one occurrence of each duplicate group..

How do I remove duplicates in a single cell?

Select a cell inside the data which you want to remove duplicates from and go to the Data tab and click on the Remove Duplicates command. Excel will then select the entire set of data and open up the Remove Duplicates window.

Does remove duplicates keep the first instance?

The trick is to sort your table before using Remove duplicates . Excel always keeps the first data set of a duplicated row. All consecutive rows are removed.

How do you remove duplicates without using distinct in SQL?

SQL | Remove Duplicates without DistinctRemove 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 self Join. … Remove Duplicates using group By.

How do I select without duplicates in SQL?

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

How do I remove duplicates in openoffice?

Follow these steps to delete all rows that have duplicate values in column A:Select all cells of the current data range. … Sort the data range by column A. … Click an empty cell in the first row. … Copy the formula down for all rows of the data range. … Now the formulas must be replaced by their values to freeze the contents.More items…•

How do I remove duplicates but keep the latest date?

Getting Rid of All Rows Except the One for the Latest DateSelect a cell within your data.Display the Data tab of the ribbon.Click the Sort tool. … Using the controls in the dialog box, indicate that you want to sort first by facility (A to Z or Smallest to Largest, whichever is appropriate) and then by inspection date (Newest to Oldest). … Click OK to actually sort the data.More items…•

How do I eliminate duplicate rows in Excel and keep the highest value?

(1) Select Fruit column (which you will remove duplicates rows by), and then click the Primary Key button; (2) Select the Amount column (Which you will keep highest values in), and then click Calculate > Max. (3) Specify combination rules for other columns as you need. 3.

How do I remove duplicates in sheets?

To do so, highlight the data you’d like to include, and click Data > Remove duplicates. At that point, you’ll have the option to select if the data has a header row and confirm what range you’d like to work with. Once you’ve made your selections, click Remove duplicates, and the job is done.

How do I eliminate duplicate rows in SQL?

RANK function to SQL delete duplicate rows We can use the SQL RANK function to remove the duplicate rows as well. SQL RANK function gives unique row ID for each row irrespective of the duplicate row. In the following query, we use a RANK function with the PARTITION BY clause.

How do I select duplicate rows in SQL?

To select duplicate values, you need to create groups of rows with the same values and then select the groups with counts greater than one. You can achieve that by using GROUP BY and a HAVING clause.

How do you remove duplicates in Python?

To remove the duplicates from a list, you can make use of the built-in function set(). The specialty of set() method is that it returns distinct elements.

How do I remove duplicate entries?

How to Remove Duplicate Entries in ExcelOpen an Excel workbook, or create a new one if you want to follow along. … Select a column (or columns) to look for duplicated data. … Open the Data tab at the top of the ribbon.Find the Data Tools menu, and click Remove Duplicates.Press the OK button on the pop-up to remove duplicate items from your data set.

How do I remove duplicates without shifting cells?

With a formula and the Filter function, you can quickly remove duplicates but keep rest.Select a blank cell next to the data range, D2 for instance, type formula =A3=A2, drag auto fill handle down to the cells you need. … Select all data range including the formula cell, and click Data > Filter to enable Filter function.More items…