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How do I check if a string in a MySQL field contains a number then delete them?
Example table:
tbl_tags ------------- | id | tag | ------------- | 1 | hello | | 2 | hello2 | | 3 | 2hello | | 4 | hel3lo | ------------- The only way I can think of is to do each number individually and use LIKE '%1%' OR LIKE '%2%' etc. But there must be an easier way?
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We can check whether the given character in a string is a number/letter by using isDigit() method of Character class. The isDigit() method is a static method and determines if the specified character is a digit.
Python String isnumeric() Method The isnumeric() method returns True if all the characters are numeric (0-9), otherwise False. Exponents, like ² and ¾ are also considered to be numeric values. "-1" and "1.5" are NOT considered numeric values, because all the characters in the string must be numeric, and the - and the .
To check if String contains only digits in Java, call matches() method on the string object and pass the regular expression "[0-9]+" that matches only if the characters in the given string are digits. String.
A string consists of one or more characters, which can include letters, numbers, and other types of characters. You can think of a string as plain text. A string represents alphanumeric data.
Check out the MySQL Regex methods. Something like the following should work.
SELECT * FROM table WHERE tag REGEXP '[0-9]' If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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