Re: Encountered an error
| От | Shaan Repswal |
|---|---|
| Тема | Re: Encountered an error |
| Дата | |
| Msg-id | CALa+hETofY8i3eF5KbME+cziJ9mn7YWgetYiPXnKTtAni1-7iQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Encountered an error (Shaan Repswal <shaun.reapswaal@gmail.com>) |
| Ответы |
Re: Encountered an error
(Jonathan Rogers <jrogers@socialserve.com>)
Re: Encountered an error (Karsten Hilbert <Karsten.Hilbert@gmx.net>) |
| Список | psycopg |
I tried to format the strings the Python way but... I'm getting this error:-
Traceback (most recent call last):
File "C:\Python34\prototype_husk.py", line 133, in submit_data
cur.execute(add_column)
psycopg2.ProgrammingError: syntax error at or near "26.2"
LINE 2: ADD 26.2 LTRS int DEFAULT NULL
Here is my code:-Traceback (most recent call last):
File "C:\Python34\prototype_husk.py", line 133, in submit_data
cur.execute(add_column)
psycopg2.ProgrammingError: syntax error at or near "26.2"
LINE 2: ADD 26.2 LTRS int DEFAULT NULL
def submit_data(self, whatevs):
conn = psycopg2.connect("dbname=prototypedb user=postgres password=superman123")
cur = conn.cursor()
cur.execute("""INSERT INTO inventory (name, code, type)
VALUES (%s, %s, %s);""", [self.entry_product_name.get_text(), self.new_product_code.get_text(), self.new_product_type.get_text()])
for x in self.quantity_list:
if x[0].get_text() !="" and x[1].get_text() != "":
add_column = """ALTER TABLE inventory
ADD %s int DEFAULT NULL""" % x[0].get_text()
cur.execute(add_column)
add_details = """UPDATE inventory
SET %s = %s
WHERE name = %s;""" % (x[0].get_text(), x[1].get_text(), self.entry_product_name.get_text())
cur.execute(add_details)
else:
continue;
conn.commit()
cur.close()
conn.close()
On Mon, Mar 14, 2016 at 7:41 PM, Shaan Repswal <shaun.reapswaal@gmail.com> wrote:
Hey guys I built the string in python and then passed it to the cur.execute() function. This was so simple! It scares me to see that I didn't get it the first time around. But anyway, thanks for laying to rest my confusions. Thank you so much!On Fri, Mar 11, 2016 at 3:33 AM, Karsten Hilbert <Karsten.Hilbert@gmx.net> wrote:On Fri, Mar 11, 2016 at 01:16:33AM +0530, Shaan Repswal wrote:
> I am new to databases and am a novice to programming in general.
Don't worry.
> @Karsten - I know, I got the feeling that the design felt awry as well. The
> database will be on the local machine. And the client side will have the
> code to error check the column names being added and also if there already
> is a column by this name or not.
You can add a second table (pseudo code)
inventory_detail
pk serial primary key
fk_inventory integer foreign key (inventory.pk)
detail_name text
detail_value text
and then - instead of creating columns in table inventory -
add rows to the inventory_detail table where .detail_name
would hold what otherwise would be the column name of the new
column in inventory and .detail_value the value you would
have put into the new column in table inventory. The
fk_inventory column would hold the primary key of the row in
the inventory table this inventory_detail row belongs to.
Just a suggestion.
Karsten
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