Tech Library For Developers
In this post will learn How to Delete all Duplicate Rows except for One in MySQL which we can perform using the combinations of different statements like group by, Min, and Max functions, Where group by the function will help in grouping the duplicate values or the rows which is completely based on the specified … Read more
In this post, we will learn How can I do ‘insert if not exists in MySQL and update if exist where for data or record to add new if it does not exist we can perform using insert into, Whereas we can make changes in existing data or we can update the existing data by … Read more
In this post, we will learn How can I SELECT rows with MAX (Column value), and PARTITION by another column in MYSQL which we can perform using the row number function to select the rows that have the highest values in a column and in addition to that it has a division too and that … Read more
In this post, we will learn How Can we concatenate multiple MySQL rows into one field, which we can perform using a built in function group concat, which is used for merging two or more rows into a single field. For the same, we have given an example with a pseudo code which could help … Read more
