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Java exercises: Display the middle character of a string - w3resource
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T-SQL: RIGHT, LEFT, SUBSTRING and CHARINDEX Functions - TechNet Articles - United States (English) - TechNet Wiki
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Removing the First and Last Character From a Table Column in SQL Server 2012
Removing the First and Last Character From a Table Column in SQL Server 2012
Learn SQL SUBSTRING Function
Learn SQL SUBSTRING Function
Learn SQL SUBSTRING Function
String (computer science) - Wikipedia
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Code Wars Javascript Tutorial "Get the Middle Character" - YouTube
Java exercises: Display the middle character of a string - w3resource
SUBSTRING, PATINDEX and CHARINDEX string functions in SQL queries
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javascript how to get middle letters of a string Code Example
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SQL Substring function overview
