How to merge Oracle column data into one field?

You can use the CONCAT function in Oracle to combine data from multiple columns into one field. Here is an example:

Create a new column called “merged_column” by joining column1, column2, and column3 from the table named table_name.

In the examples given above, column1, column2, and column3 are the columns to be merged, and table_name is the name of the table to be queried. Use the CONCAT function to combine the data from these columns and name the result as merged_column.