==CONCATENATE(text1, text2, [text3], ...)
=CONCATENATE(A1," ",B1) // returns the same result as manually concatenating using =A1&" "&B1
This is an example of how the CONCATENATE function can be used to achieve the same result as manually concatenating two cells using the ampersand (&) operator.
=CONCATENATE("Date: ", A1) // returns "Date: 44378" if A1 is 1-Jul-2021
This is an example of how the CONCATENATE function can be used to concatenate a string with a cell containing a date. The date is returned as an integer.
=CONCATENATE("The date is ",TEXT(A1"mmmm d")) // returns "The date is July 1"
This is an example of how the CONCATENATE function can be used to concatenate a string with a cell containing a date, and how the TEXT function can be used to format the date before concatenating it.
=CONCATENATE(A1:D1) // does not work
This is an example of how not to use the CONCATENATE function. This example does not work because CONCATENATE cannot be used to join two ranges.
The CONCATENATE function is a Sourcetable text function that returns a single string of text by joining multiple strings together.