Why is this SQLquery in Matlab returning repeated records?

I used JDBC driver to connect to the mySQL DB in Matlab. The connection works. However, when I used following SQLquery in Matlab to get data:

SQLquery = ['SELECT * FROM db_XYZ WHERE Col_Name=' '''Col_A'''];

I got repeated (always three times) results shown as below:

1 Col_A CA SFO 1 Col_A CA SFO 1 Col_A Ca SFO

There is only row of "1 Col_A Ca SFO" in the database table.

Why? Thanks...