Common Table Expression Basics
Learn the basics of how CTEs work with a few examples in this article.
2023-05-31 (first published: 2023-05-19)
5,289 reads
sabyda
- Skills: Java, Spring boot, React, Azure, AWS, Postgres, Oracle, Websphere, Angular, Blockchain, Corda
Establishing a Connection to PostgreSQL with GoLang
Learn how to use golang to connect to a PostgreSQL database.
2022-07-22
10,968 reads
Array and Custom Data Types in PostgreSQL
Introduction Just like every other database, PostgreSQL has its own set of basic datatypes, like Boolean, Varchar, Text, Date, Time, etc. We can easily store data like numbers, characters, date, time, etc. using these supported datatypes, but what if we need to store multiple data elements in a single column? Suppose we are storing the […]
2021-09-10
10,262 reads
Conditional DELETE and INSERT in PostgreSQL
Introduction We are comfortable with inserting/deleting record(s) into/from a table. But we sometimes get confused when we need to insert or delete records conditionally from a table. Let us look at an example. Example scenario Suppose we have a table, called ALL_EMPLOYEES, which contains all employees' information who are working or had ever worked for […]
2021-06-18 (first published: 2021-05-12)
8,375 reads
Getting a Query Execution Plan in PostgreSQL
Introduction You often need to check the performance of a PostgreSQL query you just wrote to look for some way to improve performance. In order to do this, you need a report of the query execution, which is called the execution plan). The query execution plan gives you the entire summary of the query execution […]
2021-03-18
6,971 reads
The CAST operator in PostgreSQL
Introduction Cast is a technique in PostgreSQL with which we can convert a value of one datatype into another. We can perform various cast operations in PostgreSQL for converting one datatype to another, such as the String datatype to the Integer datatype (or the Boolean datatype or datetime datatype) and vice versa. This article will […]
2021-01-21
55,577 reads
Rules in PostgreSQL
We sometimes need to perform a different/alternative actions during database queries. We need it for data protection or data abstraction. The PostgreSQL rule system allows to define an alternative action on insert, update or delete. A rule generates an extra query. As a result, rule execution impacts the performance of the system. Creating Rules A […]
2020-12-03
7,102 reads
Getting Started with Gremlin
Apache TinkerPop is an open source graph computing framework. A graph computing network is a set of vertices and edges in the network. If we compare a graph database to traditional relational databases, we can assume that every row in a table of a relational database is equivalent to a vertex in graph network. Similarly, […]
2020-10-15
3,791 reads
Blogs
A New Word: Ghough
By Steve Jones
ghough – n. a hollow place in your psyche that can never be filled;...
T-SQL Tuesday: Encryption and Data Protection
I have the honour of hosting this month’s T-SQL Tuesday. In case there’s any...
Parameterize your Databricks notebooks with widgets
Widgets provide a way to parameterize notebooks in Databricks. If you need to call...
Forums
Community at PASS Summit
Comments posted to this topic are about the item Community at PASS Summit
ASCII value of certain column is null
When ASCII(Column) is null, what does it represent? Is this some kind of special/control...
Need to output table data into multiple CSV files
Hello, I created the below script to output 999 rows from SQL Server table...
Ask SSC