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Using index returns an empty esult set

Using index returns an empty esult set

2006-07-02       - By Eitan Gur

 Back
Hi



I tried to create an index on one of my tables.

After creating this index, the queries return an empty set, instead of the
expected result.



I have a table user looks like this:

id - int(11)

username - varchar(250)

address - varchar(250)

more columns...



After creating an index:

CREATE INDEX my_index on user (username(10));



I tried to run:

SELECT * FROM user WHERE username like 'homer';



I get an empty set, however when I run the same query without the index - I get
results.



What am I doing wrong?



Thanks.