In this blog, I’ll walk you through the need for Oracle and Snowflake and then explore two methods for migration: manual migration and using automated tools. By the end, you’ll have a clear understanding of how to seamlessly transition from Oracle to Snowflake, no matter your expertise l...
Perform the following steps to configure Snowflake as a Destination in Hevo: By completing the above steps, you have successfully completed Postgres Snowflake integration. To know more, check out: PostgreSQL Source Connector Snowflake Destination Connector Check out some of the cool features of Hev...
Checking for null or missing values is a universal operation in all data analysis tasks. As such, there is an operator for that in MongoDB — $exists. Here are two examples that checks whether a certain field exists: criteria = {"location.district": {"$exists": True}} >>> races...
Click a field to add it to the report. Power BI will automatically add the field to the right area in your chart. You can also drag and drop fields into the axis, legend, and values area. 6. Change the Chart if Needed As you add fields, the chart will start to take shape. Change...
Snowflake: Handling Activity Schema CREATE TABLE user_activities ( id AUTOINCREMENT PRIMARY KEY, user_id INT NOT NULL, activity_type STRING NOT NULL, activity_details VARIANT, created_at TIMESTAMP_LTZ DEFAULT CURRENT_TIMESTAMP() ); SELECT activity_type, COUNT(*) FROM user_activities GROUP BY ...
Once you have become a freelancer, you will look back and ask “was it worth paying 5K/month to stay in that job instead of having extra freedom and responsibility?” The answer will be a definite no. I know it’s hard to see it that way without living it first, but try to put ...
# Drop null values df.dropna(axis=0, inplace=True) # filter rows with percentage > 55 output = df[df.Percentage > 55] output As you can see in the table above, the indexing of rows has changed. Initially it was 0,1,2… but now it has changed to 0,1,5. In such cases, you...
Python Profilers, like cProfile helps to find which part of the program or code takes more time to run. This article will walk you through the process of using cProfile module for extracting profiling data, using the pstats module to report it and snakev
transaction_date DATE NOT NULL, amount NUMERIC ) PARTITION BY RANGE (transaction_date); Add partitions: CREATE TABLE sales_2024 PARTITION OF sales FOR VALUES FROM ('2024-01-01') TO ('2025-01-01'); Query Example: PostgreSQL will automatically target the relevant partition: ...
The above representation, however, won’t be practical on large arrays, in which case, you can use matplotlib histogram. 2. How to plot a basic histogram in python? The pyplot.hist() in matplotlib lets you draw the histogram. It required the array as the required input and you can speci...