I am following along the example of this excellent question and first answer: PostgreSQL - fetch the rows which have the Max value for a column in each GROUP BY group But I need to do something slightly different. I…
i am trying to count the number of a weekday in a month just from a date. My goal is the expectation column. Any idea how I can achieve it with a SQL script?
I have two models in my models.py file: Flavour model: class Flavour(models.Model): flavour_choice = models.CharField(null=True, blank=True, max_length=254) def __str__(self): return self.flavour_choice and Product model: class Product(models.Model): category = models.ForeignKey( 'Category', null=True, blank=True, on_delete=models.SET_NULL ) slug = models.SlugField() sku = models.CharField(max_length=254,…
Can someone help me to achieve below mentioned requirement in postgresql. Input table: Col1 Col2 Col3 Col4 Jan XXX YYY 1234 Jan XXX YYY 5264 Jan XXX YYY 4736 Feb ZZZ WWW 123 Feb ZZZ WWW 456 Output text file:…
I am trying to execute a SELECT using psql command and Connection URIs psql postgresql://postgres:admin@localhost:5432/newDB -c "select current_date;" But I get this error : psql: warning: extra command-line argument "select current_date;" ignored I do connect to the night database but…
PostgreSQL I have a selection criteria, based on parameters I know that for this particular item it needs to call public.dothisprocedure another one could be public.dothatprocedure. I have looked at the Execute, but the that seems to execute selects or…
The Problem We have a relational table where we store user activity. A query like the following takes 77 seconds! FROM "site_activity" WHERE ( NOT "site_activity"."is_deleted" AND "site_activity"."user_id" = 68812389 AND NOT ( "site_activity"."kind" IN ( 'updated', 'duplicated', 'reapplied' )…
I have one nestjs app where I'm using typeorm, PostgreSQL . This app is working fine on linux/mac os. But in windows 11, no data found on migration table, that's why no table is created on PostgreSQL database. When I…
Apache AGE debugging issue When I attach the PostgreSQL backend process id to GDB the following messages are displayed. No debugging symbols are found. What should I do? Are there any special flags or configuration I need to set up…
I'm working on a c++ desktop application involving database management, and i'm facing few issues on how to start/stop the postgres server automatically after the application starts/stops. we could register the service during the installation as "automatic" but if the…