better hint / autocompletion for INNER JOIN, LEFT JOIN, GROUP BY

[pierresh]

The autocompletion in Codemirror is very useful.

But it could be improved. For example, the word "INNER" is always used with JOIN. But currently, I need to type INNER and then JOIN. It would be much better if just typing inn, it would suggest also INNER JOIN.

Same for:
lef, it would suggest also LEFT JOIN
gro, it would suggest also GROUP BY

And probably other combinations of SQL words that are used together.