sql MS SQL IS JSON

Posted 2021-05-13

-- Returns 1, valid
SELECT ISJSON('{ "UserName" : "John" }') 
-- Output: 1
 
-- Returns 0, invalid, missing quotes
SELECT ISJSON('{ "UserName" : John }')
-- Output: 0
 
-- Returns 1, valid, numbers are allowed
SELECT ISJSON('{ "Number" : 1 }')
-- Output: 1
 
-- Returns 1, valid, dates are just strings 
-- in ISO 8601 date format 
-- https://en.wikipedia.org/wiki/ISO_8601
SELECT ISJSON('{ "AddedOn" : "20185-05-22T00:00:00.000Z" }') 
-- Output: 1
 
-- Returns 0, invalid
SELECT ISJSON('{ "AddedOn" : 2015-08-18 }') 
-- Output: 0