今天遇到一个问题是往SQL Server中导入像m²、m³这样的单位数据，可是在SQL Server中查看到的都是m2、m3，于是在网上查了一下资料，顺便摘录下来供日后查阅。
一 Windows系统下快速键入一些特殊字符ALT+小键盘0153 ™
ALT+小键盘0169 ©
ALT+小键盘0174 ®
ALT+小键盘0177 ±
ALT+小键盘0178 ²
ALT+小键盘0179 ³
ALT+小键盘0188 ¼
ALT+小键盘0189 ½
下面是从 http://www.wikihow.com/Type-Symbols-Using-the-ALT-Key 查到的特殊字符键入方法总结：
标记?展开| SYMBOL | NAME | CODE (ALT +) | SYMBOL | NAME | CODE (ALT +) |
| © | Copyrighted | 0169 | ♄ | Saturn | 9796 |
| ® | Reserved mark | 0174 | ♅ | Uranus | 9797 |
| ℠ | Service mark | 8480 | ♆ | Neptune | 9798 |
| ℃ | Celsius | 8451 | ♇ | Pluto | 9799 |
| ℅ | Care of | 8453 | ♈ | Aries | 9800 |
| ℉ | Fahrenheit | 8457 | ♉ | Taurus | 9801 |
| № | Number symbol | 8470 | ♊ | Gemini | 9802 |
| ℗ | Sound recording copyright | 8471 | ♋ | Cancer | 9803 |
| ℞ | PRescription/pharmaceutical symbol | 8478 | ♌ | Leo | 9804 |
| Ω | Ohm | 8486 | ♍ | Virgo | 9805 |
| ℧ | Inverted ohm | 8487 | ♎ | Libra | 9806 |
| ☀ | Sunshine | 9728 | ♏ | Scorpio | 9807 |
| ☁ | Cloud | 9729 | ♐ | Sagittarius | 9808 |
| ☂ | Umbrella | 9730 | ♑ | Capricorn | 9809 |
| ☃ | Snowman | 9731 | ♒ | Aquarius | 9810 |
| ☄ | Comet | 9732 | ♓ | Pisces | 9811 |
| ★ | Star (solid) | 9733 | ♔ | White king | 9812 |
| ☆ | Star (outline) | 9734 | ♕ | White queen | 9813 |
| ☇ | Lightning | 9735 | ♖ | White rook | 9814 |
| ☈ | Thunderstorm | 9736 | ♗ | White bishop | 9815 |
| ☉ | Sun | 9737 | ♘ | White knight | 9816 |
| ☊ | Ascending node | 9738 | ♙ | White pawn | 9817 |
| ☋ | Descending node | 9739 | ♚ | Black king | 9818 |
| ☌ | Conjunction | 9740 | ♛ | Black queen | 9819 |
| ☍ | Opposition | 9741 | ♜ | Black rook | 9820 |
| ☎ | Phone (solid) | 9742 | ♝ | Black bishop | 9821 |
| ☏ | Phone (outline) | 9743 | ♞ | Black knight | 9822 |
| ☐ | Checkbox | 9744 | ♟ | Black pawn | 9824 |
| ☑ | Ballot box | 9745 | ♠ | Black spade suit | 9824 |
| ☒ | Ballot box with X | 9746 | ♡ | Red heart suit | 9825 |
| ☓ | Saltire (St. Andrew's Cross) | 9747 | ♢ | Red diamond suit | 9826 |
| ☚ | Left-pointing index finger (solid) | 9754 | ♣ | Black club suit(or shamrock) | 9827 |
| ☛ | Right-pointing index finger (solid) | 9755 | ♤ | Red spade suit | 9828 |
| ☜ | Left-pointing index finger (outline) | 9756 | ♥ | Black heart suit (or valentine) | 9829 |
| ☝ | Upwards-pointing index finger (outline) | 9757 | ♦ | Black diamond suit | 9830 |
| ☞ | Right-pointing index finger (outline) | 9758 | ♧ | Red club suit | 9831 |
| ☟ | Downwards-pointing index finger (outline) | 9759 | ♨ | Hot springs | 9832 |
| ☠ | Skull & crossbones | 9760 | ♩ | Musical quarter note | 9833 |
| ☡ | Caution sign | 9761 | ♪ | Musical eighth note | 9834 |
| ☢ | Radioactive sign | 9762 | ♫ | Musical single bar note | 9742 |
| ☣ | Biohazard sign | 9763 | ♬ | Musical double bar note | 9836 |
| ☤ | Caduceus or "Kerykeion" | 9764 | ♭ | Flat note | 9837 |
| ☥ | Ankh | 9765 | ♮ | Natural note | 9838 |
| ☦ | Eastern Christian cross | 9766 | ♯ | Sharp note | 9839 |
| ☧ | Chi Rho cross | 9767 | ✁ | Cut above | 9985 |
| ☨ | Patriarchal cross | 9768 | ✂ | Cut here | 9986 |
| ☩ | Greek cross | 9769 | ✃ | Cut below | 9987 |
| ☪ | Crescent moon & star | 9770 | ✄ | Scissors | 9988 |
| ☫ | Farsi symbol | 9771 学习交流
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