Data exploration: Difference between revisions
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* MySQL: Using [https://www.w3resource.com/mysql/string-functions/mysql-char_length-function.php MySQL CHAR_LENGTH() function - w3resource] e.g. {{kbd | key=<nowiki>=SELECT MAX(CHAR_LENGTH(`my_column`)) FROM `my_table`</nowiki>}} cf: | * MySQL: Using [https://www.w3resource.com/mysql/string-functions/mysql-char_length-function.php MySQL CHAR_LENGTH() function - w3resource] e.g. {{kbd | key=<nowiki>=SELECT MAX(CHAR_LENGTH(`my_column`)) FROM `my_table`</nowiki>}} cf: | ||
More details on [[PHP_and_MySQL_syntax#Length_of_characters | | More details on [[PHP_and_MySQL_syntax#Length_of_characters | length of characters]] page. | ||
== references == | == references == | ||
Revision as of 20:02, 7 June 2018
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 MySQL CHAR_LENGTH() function - w3resource e.g. =SELECT MAX(CHAR_LENGTH(`my_column`)) FROM `my_table` cf:
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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