I'm trying to make a query in my PostgreSQL database that checks whether an optional string value exists or not. How do I do that, taking into account my database always fill out the full size of the column with…
I'm running some tests of transform rules for the AWS Database Migration Service (DMS). The source database is MongoDB (I'm using AWS DocumentDB) and the target database is PostgreSQL (I'm using AWS RDS). I'm using "document mode" (as opposed to…
I am setting up a backup to use dbbackup. However, I am receiving an error when backing up my data. There is a similar question where the person was able to resolve it, however, the answer doesn't show how. here…
I have this materialized view: Materialized view "public.kwh_tag" Column | Type | Collation | Nullable | Default | Storage | Stats target | Description -------------+------------------+-----------+----------+---------+---------+--------------+------------- timest | date | | | | plain | | Zählerstand | double precision |…
I have a table [tt] with 2 columns which has a set of values that can repeat. Columns are named [a] and [b]: [a] [b] 1 2 1 3 1 4 2 1 2 3 3 2 4 1 4…
Every time I run postgres instance, I need to manually set the search_path to be to ag_catalog by SET search_path=ag_catalog; and then load the age, is there a way makes me don't need to every time to do that?
I have a simple table that is as seen below: Table "public.test" Column | Type | Collation | Nullable | Default --------+---------+-----------+----------+--------- id | integer | | not null | name | text | | | Indexes: "ss_pkey" PRIMARY KEY,…
We're using Debezium as a change data capture connector for PostgreSQL (actually RDS). If for any reason the debezium connector has a terminal failure, the WAL will continue to grow until either debezium is fixed, or the server runs out…
In a single transaction, is there any significant performance difference between doing batch insert with a single statement like: -- BEGIN TRANSACTION INSERT INTO films (code, title, did, date_prod, kind) VALUES ('B6717', 'Tampopo', 110, '1985-02-10', 'Comedy'), ('HG120', 'The Dinner Game',…
Trying to populate field has_impact based on the following for each feed view in the session. has_impact is true when difference between (view_end_time - view_start_time) > 3 and view_perc > 0.8 else false. view_logs table create table view_logs(session_id varchar(10), post_id…