24 lines
530 B
Markdown
24 lines
530 B
Markdown
---
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title: SQL Server
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date: 2022-11-26 14:48:31
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author: 文永达
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top_img: https://gcore.jsdelivr.net/gh/volantis-x/cdn-wallpaper/abstract/B951AE18-D431-417F-B3FE-A382403FF21B.jpeg
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---
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# SQL Server
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## 建库字符集问题
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```sql
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ALTER DATABASE ACT_DEV SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
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ALTER DATABASE ACT_DEV COLLATE Chinese_PRC_CI_AS;
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ALTER DATABASE ACT_DEV SET MULTI_USER;
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```
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## 精度标度
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精度指数字的位数，标度指小数点后的位数。例如，123.45，精度是5，标度是2，decimal(5, 2)
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