Possible values - dropdown or autofill

I remember a long time ago I have seen on some oracle client this:

1.Table data view
2.When you were manualy entering data, certain cells had drop down button where you coud select from list of possible values - don't know how client knew which columns had that.

Now, that could be due to enum data type (mybe heidi already have drop down for that data type ?), but I would like to have that for any data type ... not enforced, optional --> say I'm entering 10 possible values and I want to easily check if I remember values well.

Autofill as you type,option, would allso be good.

That is, the values in drop down (or autofill) shoud be distinct from column itself.

Yeah, checked. Enum type already has that - dropdown in HSQL.
But enum is evil (-: http://komlenic.com/244/8-reasons-why-mysqls-enum-data-type-is-evil/

So having option in HSQL to pick from distict column data on any data type would be great. Setting this option with left click on colum title. Of course manual type in alloved, not as it is now at ENUM type where is disabled.