Data exploration

Maximum length of characters in a column

• Excel: =MAX(LEN(Sheet1!A2:Sheet1!A1048576)) where 1048576 is the rows limit of Excel spreadsheet.
• 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

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