How to eliminate special characters from a field in Oracle?

To remove special characters from a field, you can use Oracle’s REGEXP_REPLACE function. Here is an example SQL statement that replaces all special characters in a field with an empty string:

SELECT REGEXP_REPLACE(your_column, '[^a-zA-Z0-9 ]', '') AS cleaned_column
FROM your_table;

In this example, your_column is a field containing special characters, and your_table is the table containing that field. This SQL statement will use the regular expression [^a-zA-Z0-9 ] to match any characters that are not letters, numbers, or spaces, and replace them with an empty string, stripping the special characters from the field.