Use the TEXTJOIN tag for questions that specify it in the question or could benefit from its use in a proposed solution.
Similar to the CONCAT or CONCATENATE worksheet functions, TEXTJOIN allows several cell values and/or string constants to be 'strung together'. TEXTJOIN has an additional parameter for a single delimiter to be used between all concatenations and a boolean option to discard potentially blank cells within a range of text values.
The TEXTJOIN was introduced with Excel 2016 in the following versions:
- Excel for Android phones
- Excel Mobile
- Excel 2016 with Office 365
- Excel 2016 for Mac
- Excel Online
- Excel for iPad
- Excel for iPhone
- Excel for Android tablet
It is currently not available within the standard desktop version.
Official support.office.com documentation page at TEXTJOIN function.