Explore table sizes

Let's start by exploring five related tables:

• stackoverflow: questions asked on Stack Overflow with certain tags
• company: information on companies related to tags in stackoverflow
• tag_company: links stackoverflow to company
• tag_type: type categories applied to tags in stackoverflow
• fortune500: information on top US companies

Count the number of columns in a table by selecting a few rows and manually counting the columns in the result.

Which table has the most rows?