Write a SQL query to count the number of duplicate TRANSACTION_ID in an ORDERS DB2 table

We can find the duplicate TRANSACTION_ID in the ORDERS DB2 table using the below query:

Example

SELECT TRANSACTION_ID, COUNT(*) AS TRANSACTION_COUNT FROM ORDER
GROUP BY TRANSACTION_ID
HAVING COUNT(*) > 1

The purpose of COUNT(*) is to count the number of rows. We will group the result based on the TRANSACTION_ID using GROUP BY function and to display the duplicate transaction ids, we will place a predicate using HAVING statement for COUNT(*) greater than one.

For example, consider the below TRANSACTIONS DB2 table:

The query will give the below result:

Mandalika

Published on 01-Dec-2020 04:39:11

• Related Questions & Answers
• Write a DB2 query to find out all the duplicate INVOICE_ID in ORDERS DB2 table?
• Write the DB2 SQL query to find the third highest ORDER_TOTAL in a ORDERS DB2 table
• Write the syntax to declare a scrollable cursor on the ORDERS DB2 table.
• MySQL query to count number of duplicate values in a table column
• How will you create a new TRIGGER on the ORDERS DB2 table? Give the syntax of TRIGGER
• How to update DB2 table with a duplicate primary key?
• How to count the number of duplicate rows in an R data frame?
• How can I write an SQL IN query with a Python tuple?
• Implementation of a table level locks in a COBOL-DB2 program during SQL execution
• Explain the concept of DYNAMIC SQL in DB2 with the help of an example
• How to get number of rows in a table without using count(*) MySQL query?
• Count of matrices (of different orders) with given number of elements in C++
• Count the occurrences of specific records (duplicate) in one MySQL query
• Create table SQL query in SAP HANA
• MySQL query to find duplicate tuples and display the count?