What's the problem with FULLTEXT search?

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Hello,
I created a table in MySQL which contains a FULLTEXT index and inserted a record into that table. When I do a FULLTEXT search, the result would be: "Empty set (0.00 sec)".
What's the problem?

The codes:

SQL

CREATE TABLE t1(
name NVARCHAR(25),
family NVARCHAR(25),
FULLTEXT(name, family)) ENGINE MyISAM;

INSERT INTO t1(name, family) VALUES('saleh', 'negahdari');

SELECT * FROM t1 WHERE
MATCH(name, family) AGAINST('saleh');

Posted 30-Jul-14 9:32am

salehne

Updated 30-Jul-14 9:43am

v5

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Comments

Sergey Alexandrovich Kryukov 30-Jul-14 16:24pm

Maybe the correct result of this query is really an empty set, why not?
—SA

salehne 31-Jul-14 9:05am

Because I have already inserted the result(a record!) into the table, so the result should be a found record! But it doesn't work, and I don't know why!!

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Jörgen Andersson · Answer 1 · 2014-08-03T02:49:00

Solution 1

A problem is that you have inserted only one row to the test table.
If you RTFM[^] you'll notice that FULLTEXT indexes use natural language search as default search mode and that words that are present in 50% or more of the rows are considered common and do not match.

Posted 3-Aug-14 2:49am

Jörgen Andersson