Jul 28, 2019 · Also indices of duplicates should be identified. Self join is a good option but to have a faster function it is better to first find rows that have duplicates and then join with original table for …

This answer identifies duplicates, while returning individual records and their unique ID's. The marked answer groups the results, meaning you cannot actually identify the duplicates by their unique ID's, …

329 What's the simplest SQL statement that will return the duplicate values for a given column and the count of their occurrences in an Oracle database table? For example: I have a JOBS table with the …

Jun 12, 2015 · I am writing this query to find duplicate CTN Records in table1. So my thinking is if the CTN_NO appears more than twice or higher , I want it shown in my SELECT * statement output on …

Jan 22, 2010 · I have a SQL Server database of organizations, and there are many duplicate rows. I want to run a select statement to grab all of these and the amount of dupes, but also return the ids …

What is the most efficient way to detect duplicates in a 10 column / 50K row table? I'm using MSSQL 8.0

Can you help me with SQL statements to find duplicates on multiple fields? For example, in pseudo code: select count (field1,field2,field3) from table where the combination of field1, field2, fi...

May 20, 2010 · Here's a handy query for finding duplicates in a table. Suppose you want to find all email addresses in a table that exist more than once:

May 21, 2019 · I am using Snowflake database and ran this query to find total count, number of distinct records and difference: select (select count(*) from mytable) as total_count, (select count(*) fr...

Dec 26, 2015 · Does any one know how can I write a SQL Server script to check whether table is contain duplicate phone number? Example: I have a table called customer with following data name …