<!-- Welcome! Thanks for suggesting features! Do you want to ask a question? Are you looking for support? Please ask us on - Discord: https://discord.com/invite/uCPdDXzbdv - GitHub Discussions: https://github.com/SeaQL/sea-query/discussions/new Make sure you have a clear feature specification before open an issue. Alternatively, please start an "Idea" thread on GitHub Discussions and let's formulate the solution together. --> ## Motivation Some sql syntex is not supported. 1. ALTER TABLE ~ ADD PRIMARY KEY 2. ALTER TABLE ~ CONSTRAINT DROP CONSTRAINT ~
