Recently I found myself needing to aggregate my multiple row SQL data into a single row. This was because the parent data was more useful to me than the multiple row’d data, but I still needed to include it because it was still an essential part of my report. Fsx activation hack. The data looked something like the following:
SQL provides the INSERT statement that allows you to insert one or more rows into a table. The INSERT statement allows you to: Insert a single row into a table Insert multiple rows into a table. Multiple table rows in one row Informix. Informix DB export to Microsoft SQL Server 2016. Copy and paste this URL into your RSS reader. How can I convert multiple rows into multiple columns in one row for family-member talbe to show result as above? Membername, age also in the same row, but failed. SELECT @SQL = COALESCE(@SQL.
firstname | lastname | department |
---|---|---|
Nic | Raboy | Engineering |
Maria | Campos | Emergency Room |
Nic | Raboy | Operations |
Nic | Raboy | Design |
Sql Concatenate Multiple Rows Into One Row
After searching the Oracle documentation I came across the LISTAGG function which took care of exactly what I needed.
Running the above query gave me a result set that looked like the following:
firstname | lastname | departments |
---|---|---|
Nic | Raboy | Design,Engineering,Operations |
Maria | Campos | Emergency Room |
Just like that I was able to see all the departments each one of my people were a part of.
Now there could be a scenario for whatever reason, maybe bad data, where there may be duplication and a person falls into a department more than once. Using an Oracle regular expression like below, you can get rid of all the duplicate entries.
![Sql Sql](/uploads/1/1/8/6/118667205/371067454.png)
Now there is another function for Oracle that worked equally well, if not better. XMLAgg will do the same task and may play nicer with longer strings of data.
The above code will work with two tables. All of the person’s departments will be concatenated into a single column for each row of person data.
If you ever find yourself needing to work with multiple rows of data, maybe in a sub-query, LISTAGG and XMLAGG are great functions for the job.
Nic Raboy
Nic Raboy is an advocate of modern web and mobile development technologies. He has experience in Java, JavaScript, Golang and a variety of frameworks such as Angular, NativeScript, and Apache Cordova. Nic writes about his development experiences related to making web and mobile development easier to understand.
Combining Multiple Rows Into One Row Sql
Please enable JavaScript to view the comments powered by Disqus.