I have such piece of program: What I want to do is write ‘<‘ in command in the same way as {table} and {pkey}, that means I want to pass operators into command from variable. Can I do it? The face of the app looks like this A little bit more of code context. It’s an app, that should get
Tag: psycopg2
Psycopg2 connection sql database to pandas dataframe
I am working on a project where I am using psycopg2 connection to fetch the data from the database like this, Now after getting the data from the table, I am running some extra operations to convert the data from cursor to pandas dataframe. I am looking for some library or some more robust way to convert the data to
psycopg2: syntax error at or near “offset”, datetime object
I am running the following SQL query using Python and psycopg2 and is getting errors. SQL query: Errors: Variables and their values Python Functions: How should i fix this? Answer I solved this issue by converting the values of in the list [‘timestamps’] to str from datetime.
Insert small dictionary like {1:23, 2:45, 3:17} into a column of SQL database table in Postgres using python language
I have a table having one varchar type column and 2 json type columns, which i created using: I now want to insert values like this using python: For which i wrote a string in python like this to execute: But this doesn’t work. I am getting following error: I searched for similar answers but couln’t find one. This should
psycopg2 sql.SQL: Composed elements must be Composable
import psycopg2 from psycopg2 import sql import datetime def connect(conn): “”” Connect to the PostgreSQL database server “”” # create a cursor cur = conn….
psycopg2 takes a value as a column
I’m trying to create a table using psycopg2 and then insert outer data from some jsons. For this reason I defined 2 function: create_words_table() and insert_data(): So, attempting to execute them: I got further error: Looking at documentation, I don’t see any mistake applying simple INSERT query and can’t understand why psycopg2 takes a tuple after word VALUE as a
String table name not working in a query with psycopg2
I would like to generate dynamic queries with variables for column names and table name. This is my code: query = sql.SQL(“select {fields} from {table}”).format(fields=sql.SQL(‘,’).join([ …
Execute a query for multiple sets of parameters with psycopg2
I have a table that I want to query, but I want to make many specific queries and return a table of any results that have met their condition, and ignore queries that do not exist. Hopefully this illustrates what I’m trying to achieve here… I want to perform a series of select statements which each have a pair of
psycopg2: cursor.execute storing only table structure, no data
I am trying to store some tables I create in my code in an RDS instance using psycopg2. The script runs without issue and I can see the table being stored correctly in the DB. However, if I try to retrieve the query, I only see the columns, but no data: This script runs without issues and, printing out file_check
The function processes the sql request
The function processes the sql request. It receives parameters and one of them can be either “null” or a value (uuid), I need to add this value to where. But there is a problem, because with null “where param is null”, but with the value “where param = value” Example Answer In sql, null = null and null <> null