Select from any of multiple values from a Postgres field
You are describing the functionality of the in clause. select * from word_weight where word in (‘a’, ‘steeple’, ‘the’);
postgresql
postgres update after select
Why not use the RETURNING clause and process both things in one single statement: UPDATE jobs SET status=”RUNNING” WHERE status=”PENDING” RETURNING * That way you will get all rows that were changed by the UPDATE with a single atomic operation.
django.db.utils.IntegrityError: duplicate key value violates unique constraint “django_content_type_pkey”
Although I am not 100% certain this is the problem, there is a good chance your sequence is out of date. Does executing this within Postgres solve the issue? SELECT setval(‘django_content_type_id_seq’, (SELECT MAX(id) FROM django_content_type));
Add Property to Object that is returned by Sequelize FindOne
The following works for sequelize v4. … const order = Order.findOne(criteria); order.setDataValue(‘additionalProperty’, ‘some value’); … Hope this helps. It’s a bit late but in case people are still looking for answers.
How do I run a migration without starting a transaction in Rails?
There’s now a method disable_ddl_transaction! that allows this, e.g.: class AddIndexesToTablesBasedOnUsage < ActiveRecord::Migration disable_ddl_transaction! def up execute %{ CREATE INDEX CONCURRENTLY index_reservations_subscription_id ON reservations (subscription_id); } end def down execute %{DROP INDEX index_reservations_subscription_id} end end
Count distinct values with OVER(PARTITION BY id)
No, as the error message states, DISTINCT is not implemented with windows functions. Aplying info from this link into your case you could use something like: WITH uniques AS ( SELECT congestion.id_element, COUNT(DISTINCT congestion.week_nb) AS unique_references FROM congestion WHERE congestion.date >= ‘2014.01.01’ AND congestion.date <= ‘2014.12.31’ GROUP BY congestion.id_element ) SELECT congestion.date, congestion.week_nb, congestion.id_congestion, congestion.id_element, … Read more
Creating a sequence on an existing table
Set the default value when you add the new column: create sequence rid_seq; alter table test add column rid integer default nextval(‘rid_seq’); Altering the default value for existing columns does not change existing data because the database has no way of knowing which values should be changed; there is no “this column has the default … Read more
Postgres: define a default value for CAST failures?
There is no default value for a CAST: A type cast specifies a conversion from one data type to another. PostgreSQL accepts two equivalent syntaxes for type casts: CAST ( expression AS type ) expression::type There is no room in the syntax for anything other than the expression to be casted and the desired target … Read more
How to get enums in prisma client?
You can access the user_type enum in your application code like this: import {user_type } from “@prisma/client”; let foo: user_type = “superadmin”; // use like any other type/enum How you plan to connect this to the client-side or send it there is up to you. Typically Prisma types reside in the server-side of your code, … Read more
Order by Column1 value if it is not null, otherwise use Column2 value
You can use case expression: ORDER BY CASE WHEN Column1 IS NOT NULL THEN Column1 ELSE Column2 END Or the corresponding syntactic sugar: ORDER BY COALESCE(Column1, Column2) The result will be like: column1 | column2 ——–|——– 1 | 1258 2 | 5972 null | 3 4 | 3698 5 | 7524 Note that the datatype … Read more