Tableau多列数据整理需求：访客统计与月份映射分析

Hey there! Here's a clear, practical breakdown of how to format your content using Markdown, just like we do for Stack Overflow-style posts:

• Headings: Start with number signs (#). More signs mean smaller heading sizes:
  • # Main Heading (H1, largest)
  • ## Subheading (H2)
  • ###### Tiny Section Heading (H6, smallest)
• List Items: Begin each item with a dash (-). For nested lists, indent the dashes with spaces or tabs:
  • Top-level list item
    • Nested sub-item
      • Even deeper nested item
• Emphasized Text: Wrap text with asterisks to highlight it:
  • Use single asterisks for italicized text: This is italic
  • Use double asterisks for bold text: This is bold
• Code & Commands: Surround code snippets with backticks (`) to set them apart. For multi-line code blocks, use triple backticks (```):
  • Inline code: npm install package-name
  • Multi-line code block (you can add a language tag for syntax highlighting):

    function calculateTotal(prices) {
      return prices.reduce((sum, price) => sum + price, 0);
    }
    

• Quoted Text: Prefix lines with a greater-than sign (>) to create block quotes—great for sharing error messages or external context:

  TypeError: Cannot read property 'value' of undefined

• Links: Use the format [Descriptive Link Text](your-url-here) to add clickable links. The link text should tell readers where they'll go without clicking:
  • [Project README](your-project-url/readme)
• Images: Use [Image Description](your-image-url-here) to embed images. The description helps users who can't see the image understand its content:
  • [Screenshot of Dashboard](your-image-host/dashboard.png)

内容的提问来源于stack exchange，提问作者BHG