Understanding Oracle’s Timestamp Format and Converting to ISO-8601 Date Datatype Oracle, a popular relational database management system, uses a unique timestamp format. In this article, we will explore how to convert an Oracle timestamp to the ISO-8601 date datatype. Introduction to Oracle’s Timestamp Format Oracle’s timestamp format is based on the TIMESTAMP data type in SQL. The format for a Unix-style timestamp (e.g., 18-12-2003 13:15:00) is: Year-month-day (YYYY-MM-DD) Hour-minute-second (HH24:MM:SS) However, when working with Oracle databases, it’s common to use the following format:

Working with JSON Data in Pandas: A Step-by-Step Guide to Counting Array Lengths by Row Introduction Pandas is a powerful library in Python for data manipulation and analysis. When working with JSON data, it’s common to encounter arrays of varying lengths. In this article, we’ll explore how to count the lengths of these arrays for each row in a pandas DataFrame. Problem Description The problem at hand involves an array of JSON objects with different lengths.

Working with Pandas: Selecting Rows Based on Duplicate Column Values Introduction The pandas library is a powerful tool for data manipulation and analysis in Python. One of the common tasks when working with pandas DataFrames is to identify and select rows that have duplicate values in specific columns. In this article, we will explore how to achieve this using pandas. Understanding the Problem Suppose we have a pandas DataFrame with three columns: Col1, Col2, and Col3.

Understanding Marker Icon View and Button Interactivity in Gmaps When creating a custom marker icon view for Google Maps (Gmaps), you might encounter issues with button interactivity. In this article, we’ll delve into the world of Gmaps, explore how to create a custom marker icon view, and address the common problem of non-clickable buttons. Creating a Custom Marker Icon View To begin with, let’s discuss the basics of creating a custom marker icon view for Gmaps.

SQL UPDATE with COALESCE and PARTITION BY statements Introduction In this article, we’ll explore how to update NULL values in a table using the COALESCE function and the PARTITION BY clause in SQL Server. We’ll delve into the differences between these two concepts and provide examples of how to use them effectively. Understanding COALESCE The COALESCE function returns the first non-null value from a list of arguments. It’s commonly used in queries where you need to replace NULL values with a default value.

Data Handling in R: A Comprehensive Guide to Data Tables Introduction R is a powerful programming language and environment for statistical computing and graphics. Its extensive libraries and packages make it an ideal choice for data analysis, visualization, and modeling. One of the fundamental concepts in R is data handling, particularly when working with data tables. In this article, we will delve into the world of data tables in R, exploring their creation, manipulation, and analysis.

Understanding Microsoft SQL Server 2017 Developer Edition Installation Errors As a developer, setting up and configuring Microsoft SQL Server 2017 can be a complex process. In this article, we will delve into the installation errors you may encounter when trying to download and install the Developer edition of Microsoft SQL Server 2017. Prerequisites for Installing Microsoft SQL Server 2017 Before we dive into the installation errors, let’s cover some essential prerequisites for installing Microsoft SQL Server 2017:

Group By Two Variables and then Create New Column which is the Value of One Variable Based on the Value of Another Variable in Python (pandas) In this section, we will discuss how to group by two variables and create a new column that contains the value of one variable based on the value of another variable in pandas. Problem Statement The problem statement is as follows: We have data with columns sbj, num_item, visit, and height.

Understanding Facebook Login Dialog and Permission Scopes =============== In this article, we will delve into the world of Facebook Login Dialogs and permission scopes. We’ll explore why the old Facebook iPhone SDK is known to be buggy and how to migrate to a more modern solution. Background on Facebook Login Dialogs The Facebook Login Dialog is a mechanism for users to grant your application access to their Facebook account information. When you request permissions, the user is presented with a dialog that allows them to choose which permissions to grant.

Understanding Pivot Tables in Pandas: A Deep Dive Pivot tables are a powerful tool for summarizing and analyzing data. In this article, we will delve into the world of pivot tables in Pandas, exploring the syntax, concepts, and use cases. Introduction to Pivot Tables A pivot table is a way to transform and summarize data from one format to another. It allows us to reorganize data in a tabular format, making it easier to analyze and understand.