On 12/24/2013 05:33 PM, Igor Korot wrote:
> Hi, ALL,
> I am working on a script that parses CSV file and after successful
> parsing insert data ino mySQL table.
> One of the fields in CSV holds a date+time value.
>
> What the script should do is check if the cell has any data, i.e. not
> empty and then make sure that the data is date+time.
> If the validation fails, it should insert NULL into the mySQL datetime
> field, otherwise the actual datetime will be inserted.
>
> Right now the script uses a placeholder "0000-00-00 00:00:00.000" if
> the date validation fails (either cell is empty or it has wrong data)
>
> What I tried so far is:
>
[...]
>>>> import MySQLdb as mdb
>>>> conn = mdb.connect('127.0.0.1','root','pass')
>>>> cur = conn.cursor()
>>>> a = None
>>>> cur.execute("Use mydb")
> 0L
>>>> cur.execute("Insert Into mytable(datefield) VALUES(STR_TO_DATE(%s))", a)
[...sql syntax error...]
>>>> a = ""
>>>> cur.execute("Insert Into mytable(datefield) VALUES(STR_TO_DATE(%s))", a)
[..."Incorrect parameter count...to native function 'STR_TO_DATE'...]
> Is it possible to do what I want?
> I'd like to use one query to insert the data into the table.
I don't use MySql but a quick peak at the docs for
str_to_date() at:
http://docs.oracle.com/cd/E17952_01/refman-5.6-en/date-and-time-functions.html#function_str-to-date
seems to say that it takes two arguments, the datetime
string and a format string. Perhaps that's part of
your problem? (And as Peter said, the values argument
to cursor.execute need to be a tuple, not a single value).
And are you sure that NULL (aka None in Python) is an
acceptable value for the 'str' argument of str_to_date()?
If not perhaps you need to do something like:
if a is None:
cur.execute("Insert Into mytable(datefield) VALUES(NULL))", (,))
else:
cur.execute("Insert Into mytable(datefield) VALUES(STR_TO_DATE(%s, '%M
%d,%Y'))", (a,))
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