I have let's say 100 000 records where 20 records relates to a concrete user. I am looking for confirmation that adding where clause to the query will make offset clause to scan only these 20 rows. e.g. record is…
There is a model: class Categories(models.Model): name = models.CharField(max_length=150, unique=True, verbose_name='Name') slug = models.SlugField(max_length=200, unique=True, blank=True, null=True, verbose_name='URL') class Products(models.Model): name = models.CharField(max_length=150, unique=True, verbose_name='Name') slug = models.SlugField(max_length=200, unique=True, blank=True, null=True, verbose_name='URL') category = models.ForeignKey(to=Categories, on_delete=models.PROTECT, verbose_name='Categoy') I don't understand…
I'm using Django with Djoser for authentication and need to restrict user registration to only those emails listed in my kontakte table. However, my custom email validation doesn't seem to be invoked. Here are the details: Djoser Configuration: DJOSER =…
I have a database table that having close to 100 columns - 25 columns are STRING, the rest is INT/DECIMAL/BOOL. This is the query that I am trying to run - the query is generated based on the search criteria…
I have the following table: ┌────────────────┬─────────────────────────────┬───────────┬──────────┬──────────────────────────────────────────────────────────────────┐ │ Column │ Type │ Collation │ Nullable │ Default │ ├────────────────┼─────────────────────────────┼───────────┼──────────┼──────────────────────────────────────────────────────────────────┤ │ id │ bigint │ │ not null │ nextval('"HistoricalDataAggregatorWorkOrders_id_seq"'::regclass) ││ │ inputTimeRange │ tstzrange │ │ not null │ │ │…
I have a table CREATE TABLE policyholder(policyholder_id text, fname text, lname text, risk_score text, high_risk text); INSERT INTO policyholder VALUES ('PH3068','ADAM','OCHSENBEIN','88','1'), ('PH3069','MALINDA','MEHSERLE','42','0'), ('PH3070','SANDRA','KUHTA','20','0'); and I want to get a table AS CREATE TABLE mod(id text, others text); INSERT INTO mod…
We have an Express API that connects to a Postgres database using Sequelize. One of our endpoints returns a list of sales, which accepts different query parameters like page, column order, filters, and a search term. And that search is…
def update_database(self, results): try: length = len(self.unique_ids) update_data = [(self.unique_ids[i], results[i]) for i in range(length)] query = """ UPDATE public.post_data AS p SET content = t.content FROM (VALUES %s) AS t (unique_id, content) WHERE p.unique_id = t.unique_id; """ template =…
Given: 2 tables: sales and purchases Sales: product_id, count, date Purchases: product_id, purchase number, count of items in the purchase, cost per unit Task: To calculate the cost of goods sold using the FIFO (first in - first out, first…
I am trying to compose Apache Guacamole environment with docker-compose file for containers definition and a Dockerfile to initialize the database. I followed this tutorial, it generally worked without the automated database setup (Dockerfile), but when I try to put…