Suppose we have column names
We want to prepare them to use in a query and need to put double qutoes around them then put comma and combine all into one line.
press Ctrl + H and check Regular expression radio button.
Find What: (.+)
Replace with: "\1"
it becomes
to put , (comma) at the ends of each line
Find What: (.+)
Replace with: \1,
to combine them into one line
Find What: \r\n
Replace with: