DaniWeb » Databases
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DaniWeb's Databases forum encompasses everything related to data storage for the web and other uses. Connect with Developers, IT pros, digital marketers, and tech enthusiasts to discuss database designs, database dependency, SQL servers, Microsoft Access, Oracle, PHP, and more.
DaniWeb » Databases
1M ago
What are some ways to improve MySQL performance on queries against large tables that include the HAVING BY clause. It's my understanding that anything in there doesn't benefit from table indexes ..read more
DaniWeb » Databases
2M ago
This is the error message:
%Run -c $EDITOR_CONTENT
Traceback (most recent call last):
File "<string>", line 6
image = cv2.imread(C:\Users\Audun Nilsen\Pictures\pica.webp)
^
SyntaxError: invalid character in identifier
This is the code:
import cv2 # OpenCV for image processing
image = cv2.imread(C:\Users\Audun Nilsen\Pictures\pica.webp ..read more
DaniWeb » Databases
3M ago
Hey Gang!
OK today I am having trouble with my transaction processing application implemented in python/MySQL. Here is some "working" testing code.
import psycopg2
from psycopg2 import Error
import binascii
from binascii import unhexlify
import mysql.connector as mysql
sql='''CREATE PROCEDURE testprocedure(OUT tacos INT)
BEGIN
show tables;
SET tacos := 1 ;
END'''
blank_connection_string = {
'user': 'someusername',
'password': 'daniwebisthebest',
'host': 'localhost',
'database': 'fundatabase',
'raise_on_warni ..read more
DaniWeb » Databases
5M ago
Planning a party can be a thrilling and rewarding experience, but it can also be incredibly overwhelming. From selecting the perfect venue to organizing the theme and decorations, there are countless details to consider. That's where we come in! At Party Rentals Anaheim, we take the stress out of party planning by providing top-quality rental services that will make your event truly unforgettable. In this article, we'll explore the numerous benefits of choosing us as your party rental provider so let's dive in and discover how we can make your next event a roaring success!
A Wide Range of Part ..read more
DaniWeb » Databases
6M ago
Hey! I've been asked to store some data from a client in mysql in an encoded format using python. Nothing could be easier, right?
I will later need to decode the same data using mysql exclusively. Given that constraint, I thought that base64 would be the go to since nearly every contemporary data tool that we've heard of is base64-literate.
So from flatfile it goes into the db using python no problem.
When I try to decode the data for warehousing later, the mysql from_base64() function returns a hexadecimal string instead of....ascii string? Or whatever. Human readable string.
I've found vario ..read more
DaniWeb » Databases
6M ago
How do I create a table in postgres that's associated with a specific database?
Obviously from the command line one can do
Create table tablename ();
But how do I make sure that the table is associated with the correct database?
CREATE table dbname.tablename();
is giving me the error:
ERROR: schema "dbname" does not exist ..read more
DaniWeb » Databases
7M ago
My textbox datatype is DateTime.
Using the click event of a button, this code is placed following MyTableBindingSourceAddNew()
Dim CurrentDateTime As DateTime = DateTime.Now.ToString("dd.MM.yy hh:mm:ss")
Me.SaleDateTextBox.Text = CurrentDateTime
I then update table with TableAdapter.
On my form I have a dropdown combobox in a toolbar, display member being "SaleDate"
This displays DateTime, but time is always 12:00:00AM
The SaleDateTextbox.Text populates as Date.Now.
I am not getting correct date and time in both textbox and combobox.
All help appreciated.
Shane ..read more
DaniWeb » Databases
8M ago
I'm working on an SQL query for a complex reporting system that involves multiple tables and joins. However, the query's performance is not meeting my expectations, and I suspect that the way I've structured my joins might be inefficient.
Here's a simplified version of my query:
SELECT
orders.order_id,
customers.customer_name,
products.product_name,
order_details.quantity,
order_details.unit_price
FROM
orders
JOIN
customers ON orders.customer_id = customers.customer_id
JOIN
order_details ON orders.order_id = order_details.order_id
JOIN
products ON order_det ..read more
DaniWeb » Databases
9M ago
My site is on Apache, the host has enabled 'mod_unique_id'
My CSP runs in the root .htaccess.
My host has given me 2 lines of code to put in the CSP to make an unrecognisable base64 NONCE code each time it's needed - particularly for PayPal.
What they sent (in bold):
`
<IfModule mod_headers.c>
**Header set X-Nonce "expr=%{base64:%{reqenv:UNIQUE_ID}}"
Header set Content-Security-Policy "expr=default-src 'self'; script-src 'self' 'nonce-%{base64:%{reqenv:UNIQUE_ID}}'"**`
The 2 lines of code go in my .htaccess somewhere, I'm pretty confident about the script-src but the bit that's ..read more
DaniWeb » Databases
1y ago
An equipment company wishes to create a database to support the hiring of tools and machinery to clients. The company has three types of equipment: power tools, such as drills and vacuum cleaners, plants such as excavators and scaffolding. Each piece of equipment is identified by a number. Power tools are described by their model and the voltage they use, whereas plants are classified by their model and their size tonnes. can be traditional, aluminium fibreglass; in addition, its width can be single or double. A large piece of equipment may be composed of smaller pieces of equipment.
The compa ..read more