Wildcard String is a combination of strings and wildcard characters For example, -- select rows where the last name -- of customers start with R SELECT * FROM Customers WHERE last_name LIKE 'R%'; Run Code Here, % (zero or more characters) is a wildcard. So, the SQL command sele...
MQTT topicsare simple strings but are subject to an MQTT topic structure. Much like a computer’s file system, MQTT topics have a defined hierarchical structure, and they also use the forward slash(/)as a delimiter. In your computer’s file system, the forward slashes in a path indicate w...
Note that transforms in parameters must be quoted strings:Wrong: 'q' : {name} Correct: 'q' : '{name}'As a special case, if the quoted parameter starts with an @ character (e.g. '@name', it will not be formatted via .format(); instead, name is taken directly from the ...
If the outgoing topic name contains transformation strings (e.g. out/some/{temp}) values are interpolated accordingly. Should this not be possible, e.g. because a string isn't available in the data, the message is not published.mysql
If the outgoing topic name contains transformation strings (e.g. out/some/{temp}) values are interpolated accordingly. Should this not be possible, e.g. because a string isn't available in the data, the message is not published.mysql