i would like to do a find and replace inside an entire database not just a table.
How can i alter the script below to work?
update [table_name] set
Short answer: You can't.
Long answer: You can use the INFORMATION_SCHEMA to get the table definitions and use this to generate the necessary UPDATE statements dynamically. For example you could start with this:
SELECT TABLE_NAME, COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'your_schema'
I'd try to avoid doing this though if at all possible.