Excel数据导入导出缓慢的问题长期困扰着许多数据分析人员。面对动辄数十万甚至百万行的数据，Excel常常出现卡顿、崩溃，严重影响工作效率。 2025年，随着数据量的持续增长，如何高效地进行数据导入导出成为了一个亟待解决的问题。本文将深入探讨如何利用 SQL 批量操作，将Excel数据导入导出的效率提升数倍，彻底告别手动复制粘贴的低效时代。

之前在给北京一家药企培训时，有伙伴问如何计算不重复的个数。这是一个有代表性的问题，我整理出来以下四种方法，分别是函数法、透视表法、Power Query法和Power Pivot法，看你能不能用得上？ 案例数据 这是公司的部分销售订单表，主要涉及省份 ...

Have you ever spent hours wrestling with messy spreadsheets, trying to clean up data that just won’t cooperate? Or maybe you’ve found yourself manually merging files, painstakingly copying and pasting ...

Microsoft Excel: How to use Power Query to display a list of duplicate values or records Your email has been sent Whether duplicate records are good or bad depends on specific conventions that you ...

Have you ever found yourself staring at a sprawling Excel workbook, wondering if you’re using the right tool for the job? Between Power Query, Power Pivot, and VBA, it’s easy to feel like you’re ...

To enter data in Excel, you can either type it in or import it from different sources. It’s easy to import data from a standard .CSV format, but what about importing it from a database? You can ...

You won't need to memorize as many formulas for Excel, thanks to artificial intelligence. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

BigQuery is getting bigger. On Wednesday, Google announced that it has added two new features to its BigQuery functionality, which provides the ability to analyze Big Data in the cloud. A new BigQuery ...

Microsoft Excel queries retrieve information from tables of data. For example, your business may store staff sales figures in an Access database. To chart the performance of your most productive staff ...