Through this query - {'query': 'SELECT * FROM server s'}
We are getting all the columns of a row but I want to retrieve only 1 column i.e. _id so that I can check is _id exist or not.
Please help me how to select only _id column instead of * because it saves memory.
Through this query - {'query': 'SELECT * FROM server s'}
We are getting all the columns of a row but I want to retrieve only 1 column i.e. _id so that I can check is _id exist or not.
Please help me how to select only _id column instead of * because it saves memory.