REPLACE in SQL Server
Replace function replaces a substring with another substring in a string.
Let us quickly look at the examples straightaway to understand better.
SELECT REPLACE('SQL Server is a database server', 'sql server', ' SQL SERVER');
Point to be noted is that REPLACE function replaces all occurrences of word to be replaced. If there is a requirement to replace first or any specific range, then REPLACE will not work. There is an old blog post that explains how to replace ONLY the first occurrence as https://sqlzealots.com/2017/05/20/how-to-replace-first-occurrence-of-a-word-in-a-sentence-in-sql-server/
REPLICATE in SQL Server
REPLICATE() function repeats a string to the number of times its specified in the second parameter.
SELECT REPLICATE('SQL | ',2)
REVERSE in SQL Server
REVERSE() function reverses a string passed.
SELECT REVERSE ('SQL Server')
Reverse is a very powerful SQL String function that uses many places. I used this function in one of my earlier post on checking palindrome in SQL Server as below.
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