Substring 👍
A substring is a contiguous(continuous) sequence of characters present within a string. It is a string present inside a string.For instance, the substrings of the string “tree” would be:‘t,’ ‘r,’ ‘e,’ ‘tr,’ ‘tre,’ ‘tree,’ ‘re,’ ‘ree,’ ‘e...
![[sql study note] replace, substring, concat, if, case, cast](https://cdn.hashnode.com/res/hashnode/image/upload/v1709194867103/c4a38575-a31d-4c9a-95dd-179e54b322cd.png)
