Mysql throwing exception on Regex

This works:

mysql> SELECT '123456789' REGEXP '.{3}';#1

mysql> SELECT '123456789' REGEXP '.{10}';#2

but not this:

mysql> SELECT * FROM mymodel WHERE some_text_field REGEXP '.{100}';#3

throwing exception: ERROR 1139 (42000): Got error 'invalid repetition count(s)' from regexp


It means you don't have a string which is 100 characters or more in this field. You could try this instead, if you just want to check this condition:

SELECT * FROM mymodel WHERE LENGTH(some_text_field) = 100 ;

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