Understanding PostgreSQL SUBSTRING function

Oracle Substring function overview with examples

MySQL substring() function - w3resource

SQL SUBSTRING function and its performance tips

Write an SQL query to perform the following: Find and display the position of the substring “India” in the string “Incredible India”. - Informatics Practices | Shaalaa.com

SSRS String Manipulation

JavaScript Substring Examples - Slice, Substr, and Substring Methods in JS

Substring in Java: Examples, Methods and Applications

R Extract Substring Before or After Pattern (Example) | Return Characters