I have a table which has a jsonB column named as emailAddress. An example row in that column is like this: { "[email protected]": { "tags": { "work": true } }, "[email protected]": { "tags": { "work": true } } } I…
I was reading a query that had the all keyword within a function call: select count(all 97); ┌───────────┐ │ count(97) │ ╞═══════════╡ │ 1 │ └───────────┘ Elapsed: 11 ms What does all (outside a subselect) do in postgres? I was…
I'm just learning SQL, using Postgres. I have fruit sales data, how can I retrieve fruit that is only sold from the certain date to another date. I use a query like this but error SELECT product_name, min (purchase_date) AS…
I'm trying to migrate from SQL Server to Postgresql. Here is my Posgresql code: Create View person_names As SELECT lp."Code", n."Name", n."Type" from "Persons" lp Left Join LATERAL ( Select * From "Names" n Where n.id = lp.id Order By…
Is there any convention to add in a local timezone (whatever the user has set it as) in a database? For example, like I can do the following for UTC time: 2014-01-01 01:02:03Z Is there something like the following to…
Is there a way to pass a Stream as a sql parameter to insert a query into a Postgres bytea/jsonb column using .NET? As I already have a Stream and those column types are binary types, I'm trying to pass…
I have a table with two columns: parties and their respective spendings (party and per_capita). I have to return a table with the column of the parties and the average of all the spedings done by them if the party…
Is there a way to run a window function where the partition is for a date column and I need the the values to be aggregated in a weekly interval. For example in this dataset Date Value 01-01-2022 10 02-01-2022…
I have a table with a couple of 100 columns on which I want to use the GREATEST function. How can I prevent putting each and every column name into the query? The columns on which I want to use…
I was following this blog https://wanago.io/2022/07/25/api-nestjs-database-migrations-typeorm/ to setup migrations in my nestjs project but got the error that dataSourceFileExport i.e DataSource object exported from the migration.config.ts is not iterable. And I don't know why it's not iterable. I couldn't find…