MySQL SELECT statement for the "length" of the field is greater than 1

I have an LINK field in my 开发者_StackOverflowtable. Some rows have a link, some don't.

I'd like to select all rows where LINK is present. (length is greater than X characters).

How do I write this?

How about:

SELECT * FROM sometable WHERE CHAR_LENGTH(LINK) > 1

Here's the MySql string functions page (5.0).

Note that I chose CHAR_LENGTH instead of LENGTH, as if there are multibyte characters in the data you're probably really interested in how many characters there are, not how many bytes of storage they take. So for the above, a row where LINK is a single two-byte character wouldn't be returned - whereas it would when using LENGTH.

Note that if LINK is NULL, the result of CHAR_LENGTH(LINK) will be NULL as well, so the row won't match.

select * from [tbl] where [link] is not null and len([link]) > 1

For MySQL user:

LENGTH([link]) > 1

Try:

SELECT
    *
FROM
    YourTable
WHERE
    CHAR_LENGTH(Link) > x

Just in case anybody want to find how in oracle and came here (like me), the syntax is

select length(FIELD) from TABLE

just in case ;)