Programming

Syntax Tolerance MQL, which has JSON syntax, is not so hard to write, but sometimes you can make minor syntax mistakes that renders your query invalid. The query editor automatically tries to clean up such syntax errors behind the scene before running the query, so that you can still make mistakes, such as forgetting quotation marks and commas (illustrated in screenshot below), and your query still runs most of the time. You can also tell the query editor to explicitly clean up your query by clicking the Clean Up button. It will quote unquoted strings and property names, insert missing commas, and remove trailing commas. (Tip: the keyboard shortcut Shift-Ctrl-Enter will clean up your query explicitly and then run it.)