##jcSQL##

This project is a simple implementation of a executable engine of SQL which matches my own interest.

###jcSQL's first stage of the representation :###

select <- student name age =>select name,age from student>

select <- student =>select * from student>

update <- student name='xxx' [age == 10] =>update student set name = 'xxx' where age = 10>

delete <- student [ name == 'xxx'] =>delete from student where name = 'xxx' >

create <- student string name int age [ name primary key] =>create table student (name string,age int,primary key(name))>

insert into student (name,age) values('xxx',10) =>insert <- student name='xxx' age=xxx >

drop <- student =>drop table student>

alter table student add dept string =>alter<- student + string dept>

alter table student drop column dept =>alter<- student - string dept>

alter table student alter column dept int =>alter<- student / int dept

Well...this toy is incomplete and needs other key words,;p,maybe the grammar will be altered gradually during the development process of the compiler.