Data exploration
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Maximum length of characters in a column
- Excel[1]: =MAX(LEN(Sheet1!A2:Sheet1!A1048576)) where 1048576 is the rows limit of Excel spreadsheet[2].
- MySQL: Using CHAR_LENGTH() function - w3resource e.g. =SELECT MAX(CHAR_LENGTH(`my_column`)) FROM `my_table`
Not using LENGTH() function.
More details on length of characters page.
References
 This article "Data exploration" is still being written. If there are any incomplete parts, you are welcome to directly edit them. 這篇文章「Data exploration」內容還在撰寫中，如果有不完整的部分，歡迎你直接動手修改。
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