https://www.tsql.info/functions/isdate.php
T-SQL ISDATE - Date Functions syntax and example
ISDATE - Date Functions TSQL Tutorial: return the value of isdate function
t sqldate functionsisdatesyntaxexample
https://community.smartsheet.com/discussion/131319/if-isdate-not-working
IF(ISDATE) not working? - Smartsheet Community
I have "Column B" that pulls in a date from another sheet. And I have "Column A" that changes to Complete when that date populates into Column B. In addition,...
not workingisdatesmartsheetcommunity
https://help.libreoffice.org/latest/ne/text/sbasic/shared/03102300.html
IsDate Function
isdatefunction
https://helpx.adobe.com/coldfusion/cfml-reference/coldfusion-functions/functions-in-k/isdate.html
IsDate
isdate