Recursive cte
Darshini
A Recursive Common Table Expression (CTE) is a feature in SQL that allows a query to repeatedly reference itself, is a powerful SQL feature that simplifies working with hierarchical or…
SQL
how to change a sql data type before flattening
Changing a SQL data type before flattening involves transforming the format or type of data in a column or structure to match the desired schema or processing requirements. This step…
ACID Properties
ACID properties are fundamental principles that ensure reliable and consistent transaction processing in relational databases. The term ACID stands for Atomicity, Consistency, Isolation, and Durability. These properties ensure that database…
how to dynamic filtering to sql query
What is Dynamic Filtering in SQL? Dynamic filtering is the process of creating and applying flexible filter conditions to SQL queries based on user input, program logic, or runtime conditions.…
Dynamic Pivoting
Dynamic pivoting is a technique used when the columns to be pivoted are not known in advance. It enables the transformation of rows into columns dynamically based on the data.…
Query Execution Order
Understanding the order of execution in SQL queries is essential for writing efficient and accurate database operations. SQL (Structured Query Language) processes queries in a specific logical sequence, regardless of…
Pivoting
What is Pivoting in SQL? Pivoting is a data transformation technique in SQL where rows are converted into columns. This transformation allows you to display data in a tabular format…
Pivoting and Unpivoting
Introduction Pivoting and unpivoting are essential SQL operations that transform data structures for better insights and flexibility. These techniques are widely used in data analysis, reporting, and ETL (Extract, Transform,…
DDL-Create
The CREATE command in SQL is one of the most versatile Data Definition Language (DDL) commands. Internally, it instructs the database management system (DBMS) to allocate necessary resources, define metadata,…
DDL, DML, TCL, DQL
cheet sheet Welcome to the SQL cheat sheet! This comprehensive guide covers essential SQL commands across different categories: DDL (Data Definition Language), DML (Data Manipulation Language), TCL (Transaction Control Language),…