I am trying to connect to postgresql using the following code import psycopg2 hostname = 'localhost' database = 'demo' username = 'postgres' pwd = 'johndoe' port_d= 5432 conn = psycopg2.connect( host=hostname, dbname=database, user = username, password=pwd, port = port_d) conn.close()…
I am making a data pipeline using python and am pulling a 3gb table from our RDS instance using psycopg2. Im currently testing this locally, and whenever I try this my Ram says my python instance is taking up 27gb…
Can I add a hint clause to a materialized view in PostgreSQL as follows? or is there another way? ex1. CREATE MATERIALIZED VIEW MV1 /*+ IndexScan(tableA) */ SELECT... ex2. /*+ IndexScan(tableA) */ REFRESH MATERIALIZED VIEW MV1 I tried both, but…
I have code that is attempting to pass an array of chrono::DateTime values to a stored procedure in postgres. let stmt = connection.prepare_cached("call proc($1)").await.unwrap(); if let Ok(_) = connection.execute(&stmt, &[&array]).await { info!("worked"); } else { error!("error"); } but I am…
In my PostgreSQL database, I have a numeric type column with very small numbers (e.g. 0.000000022385). I have a FastAPI endpoint which returns this data like so: @app.get("/data", response_model=List[models.Data_Read], tags=["DataModel"]) async def getall_data(): with Session(database.engine) as session: query = select(models.data_row)…
If running e.g. psql as a client, one can use a query like SELECT * FROM pg_stat_activity WHERE application_name = 'psql'; to determine the local port by inspecting the client_port column in the returned result. How can an arbitrary client…
I need to calculate delta between two tables. See the example: First, I have tables A and B table A ID Value Id 1 10 Id 2 20 Id 3 30 Id 4 40 table B ID Value Id 1…
When using npm start to start AGE Viewer, I get the following error in my terminal. Error: Not connected at _callee4$ (/home/hallixon/age-viewer/backend/src/controllers/databaseController.js:64:19) at tryCatch (/home/hallixon/age-viewer/backend/node_modules/@babel/runtime/helpers/regeneratorRuntime.js:44:17) at Generator.<anonymous> (/home/hallixon/age-viewer/backend/node_modules/@babel/runtime/helpers/regeneratorRuntime.js:125:22) at Generator.next (/home/hallixon/age-viewer/backend/node_modules/@babel/runtime/helpers/regeneratorRuntime.js:69:21) at asyncGeneratorStep (/home/hallixon/age-viewer/backend/node_modules/@babel/runtime/helpers/asyncToGenerator.js:3:24) at _next (/home/hallixon/age-viewer/backend/node_modules/@babel/runtime/helpers/asyncToGenerator.js:22:9) at /home/hallixon/age-viewer/backend/node_modules/@babel/runtime/helpers/asyncToGenerator.js:27:7 at…
Im developing a feature for the apacheAGE extension and basically I want to insert a tuple to two tables at the same time. I know that Postgres provides the inheritance system, so you can access the tuples from the parent…
I have a postgres table Article which has three columns - title, description, categories. All the three columns contain plain text. I have 2 search words - say word1, word2 I want to find the records where title+description+categories contains all…