{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do I get the first available block in storage?","a":"For relational databases, such as MySQL or PostgreSQL, you can write  SQL queries to get the first available block."}]}],"pr":"36a974577aaf34ba02d95c989ee8e8b14e2fbf441fd7957ce8c46ce19e52369a"}