by lochan2014 | Feb 1, 2025 | Python
What is Dictionary in Python? First of All it is not sequential like Lists. It is a non-sequential, unordered, redundant and mutable collection as key:value pairs. Keys are always unique but values need not be unique. You use the key to access the corresponding value.... by lochan2014 | Jan 11, 2025 | Python
Python is a popular high-level, interpreted programming language known for its readability and ease of use. Python was invented by Guido Van Rossum and it was first released in February, 1991. The name python is inspired from Monte Python Flying Circus,... by lochan2014 | Jan 7, 2025 | Pyspark, Python
#1. create a sample dataframe # create a sample dataframe data = [ (“Sam”,”Sales”, 50000), (“Ram”,”Sales”, 60000), (“Dan”,”Sales”, 70000), (“Gam”,”Marketing”, 40000),... by lochan2014 | Jan 4, 2025 | SQL
What is Indexing? Indexing is a data structure technique that allows the database to quickly locate and access specific data. It’s similar to the index at the back of a book, which helps you find specific pages quickly. How Indexing Works Index Creation: The... by lochan2014 | Dec 28, 2024 | SQL
Spark SQL Operators Cheatsheet 1. Arithmetic Operators OperatorSyntaxDescriptionExample+a + bAdds two valuesSELECT 5 + 3;-a – bSubtracts one value from anotherSELECT 5 – 3;*a * bMultiplies two valuesSELECT 5 * 3;/a / bDivides one value by anotherSELECT 6 /... by lochan2014 | Dec 8, 2024 | Pyspark
A quick reference for date manipulation in PySpark:– FunctionDescriptionWorks OnExample (Spark SQL)Example (DataFrame API)to_dateConverts string to date.StringTO_DATE(‘2024-01-15’, ‘yyyy-MM-dd’)to_date(col(“date_str”),...