如何提取SQL场景下文本中双引号内的数据?
Hey there! When crafting posts on Stack Overflow or similar platforms, using Markdown correctly makes your content way more readable and professional. Here's a quick, practical guide to the formatting basics you'll need:
Headings: Use number signs (
#) to create hierarchical headings. The count of#determines the heading size—fewer means larger:# Level 1 Heading(main section title)## Level 2 Heading(subsections)### Level 3 Heading(detailed subsections)- You can go all the way up to
###### Level 6 Headingfor tiny, niche sections
List Items: Start each entry with a dash (
-) for unordered lists. Indent with spaces to nest items:- Top-level list item
- Nested list item 1
- Nested list item 2
- Top-level list item
Text Emphasis: Wrap text with asterisks to highlight it:
- Italicize with single asterisks:
*This is italic text*→ This is italic text - Bold with double asterisks:
**This is bold text**→ This is bold text
- Italicize with single asterisks:
Code & Commands: Use backticks (
`) to set code apart from regular text:- Inline code (great for commands, variables, or short snippets):
SELECT * FROM customers; - Multi-line code blocks (perfect for full queries or scripts) use triple backticks, and you can specify the language for syntax highlighting:
SELECT customer_id, order_date FROM orders WHERE total > 100;
- Inline code (great for commands, variables, or short snippets):
Quoted Text: Use a greater-than sign (
>) to quote external content, like documentation snippets or other users' comments:"A query without a WHERE clause will return every row in the table—use with caution!"
Links: Format links by putting the display text in square brackets, followed by the URL in parentheses:
[Stack Overflow Help Center](https://stackoverflow.com/help)→ Stack Overflow Help Center
Images: For images, put descriptive alt text in square brackets, then the image URL in parentheses. The alt text helps if the image fails to load:
[SQL Syntax Cheat Sheet](https://example.com/sql-cheat-sheet.png)→ SQL Syntax Cheat Sheet
内容的提问来源于stack exchange,提问作者SKenneth

