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Don't know the difference between NULL, empty strings, and string literal NULL values? No problem. : r/ProgrammerHumor
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SQL Server concat empty string (not null) - Stack Overflow
Javarevisited: How to replace NULL with Empty String in SQL Server? ISNULL() vs COALESCE() Examples
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SQL LEN() - SqlSkull
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JavaScript Check Empty String – Checking Null or Empty in JS
