一、SqlServer表数据复制到excel 1、新建查询,用sql语句把表数据读出来 2、然后,选择数据,右键,复制(也可以点击连同标题复制),复制到记事本中(不然会乱码) 3、然后再把记事本的内容复制,在excel中粘贴就可以了。 二、excel复制到SqlServer表数据 1
一、SqlServer表数据复制到excel
1、新建查询,用sql语句把表数据读出来
2、然后,选择数据,右键,复制(也可以点击连同标题复制),复制到记事本中(不然会乱码)
3、然后再把记事本的内容复制,在excel中粘贴就可以了。
二、excel复制到SqlServer表数据
1、打开excel复制数据。
2、用编辑状态打开sql表
3、右键点击表最下面一行左侧的序号,选择粘贴(注意,excel的列一定要和sql表的列对应)
4、如果有自增,不要复制自增字段

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ChooseCHARforfixed-lengthdata,VARCHARforvariable-lengthdata,andTEXTforlargetextfields.1)CHARisefficientforconsistent-lengthdatalikecodes.2)VARCHARsuitsvariable-lengthdatalikenames,balancingflexibilityandperformance.3)TEXTisidealforlargetextslikeartic

Best practices for handling string data types and indexes in MySQL include: 1) Selecting the appropriate string type, such as CHAR for fixed length, VARCHAR for variable length, and TEXT for large text; 2) Be cautious in indexing, avoid over-indexing, and create indexes for common queries; 3) Use prefix indexes and full-text indexes to optimize long string searches; 4) Regularly monitor and optimize indexes to keep indexes small and efficient. Through these methods, we can balance read and write performance and improve database efficiency.


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