如何使用Python查询sqlite3中的unicode字符串

Question

Say I have an unicode string u"Robinson Can\ó" , and I stored the string in sqlite3 database using the following:

cursor.execute('create table tb (name text)')
cursor.execute('insert into tb values (?)', str')

however, if I want to query the unicode string u"Robinson Can\ó" from the database, I got nothing.

cursor.execute("select * from tb where name = '%s'" % str)

but if I query another unicode string which does not contain the unicode, like, u"Kobe Byrant", I can get entry back.

So can anyone tell me how I can deal with the unicode with sqlite3, using Python?

Thank a lot!

Answer 1

Do not use string interpolation when executing SQL code. Use SQL parameters instead:

cursor.execute("select * from tb where name = ?", (str,))

This applies to any database interaction involving parameters, not just SQLLite.