The REPLACE () function accepts three arguments: source is a string where you want to replace. If the old_text appears multiple times in the string, all of its occurrences will be replaced. That is, if you queried the table again in a separate query without COALESCE, null values would still exist. How to replace a value in array.
I have a table column containing values which I would like to remove all the hyphens from. The values may contain more than one hyphen and vary in length. Example: for all values I would like to r. The optional RETURNING clause causes UPDATE to compute and return value (s) based on each row actually updated.
This section describes functions and operators for examining and manipulating string values. Strings in this context include values of all the types character , character varying , and text. Unless otherwise note all of the functions listed below work on all of these types, but be wary of potential effects of the automatic padding when using. Let’s see some examples to understand how the REGEXP_REPLACE() function works.
Recently, I got the requirement like replace same string value in multiple columns. It will find value (again all occurences) and replace it with given other value. When CREATE OR REPLACE FUNCTION is used to replace an existing function, the ownership and permissions of the function do not change.



