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SQL Server REPLACE Function Guide

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Function Overview: REPLACE() function replaces substring in a string with new pattern
Function is useful for data cleaning, formatting, and updating
Syntax includes REPLACE(), source_string, search string, and replacement string
Literal String Usage: Replaces specific substring in literal string
Example: 'I live in USA' becomes 'I live in United States of America'
Collation Integration: Collation determines data storage and comparison rules
Without collation, REPLACE() is case-insensitive
Different collations affect case sensitivity in string replacement
Latin1_General_CS_AS treats 'd' and 'D' as different letters
Latin1_General_CI_AS treats lowercase and uppercase letters as same
Table Column Usage: REPLACE() works with table columns containing substrings
Example: Replaces 'OldModel' in ProductDescription with 'NewModel'
Function applies to all occurrences of substring in table