Code:
LEFT({Field Name},LENGTH(QUERYSTRING("Begins with?","")))=QUERYSTRING("Begins with?","")


If you want the test NOT to be case sensitive, then use:
Code:
UPPER(LEFT({Field Name},LENGTH(QUERYSTRING("Begins with?",""))))=UPPER(QUERYSTRING("Begins with?",""))


Attachments
BeginsWith.zip (33 downloads)



Edited by Andrew Bates (11/23/16 11:34 AM)
Edit Reason: Attached example
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Andrew Bates