Python sqlite3 string variable in execute

Question

I try to execute this sqlite3 query in Python. I reduced the code to the minimum, sqlite.connect, etc works.

column = \'Pron_1_Pers_Sg\'
goal = \'gender\' 
c         


        

Answer 1

Parameter markers can be used only for expressions, i.e., values. You cannot use them for identifiers like table and column names.

Use this:

cur.execute("SELECT "+column+" FROM Data where "+goal+"=?", (constrain,))

or this:

cur.execute("SELECT %s FROM Data where %s=?" % (column, goal), (constrain,))

(And don't commit before you have actually finished accessing the data.)