mySQL_learningnotes

This is my personal learning notes for SQL server / MySQL + Pgadmin4 / PostgreSQL11 learning notes and some examples

interview questions:

• Interview question from American WEB

Creat function in sql

• https://stackoverflow.com/questions/14550486/how-to-create-a-function-in-sql-server

shuati

• https://www.codewars.com/dashboard

over func.

• https://www.c-sharpcorner.com/UploadFile/78607b/over-clause-in-sql-server-windows-on-data-part-1/