HyperTable - Why we can't use the * in Select Clause?

Question

Ok I have some trouble getting through HyperTable Going through the docs and other stuff I am still not very confident at why I can't use the

SELECT * FROM TABLE WHERE....

I am allowed only to do

SELECT COL_NAME FROM TABLE WHERE COL_NAME = COL_VAL;

What if I want to select two columns using a rowkey? Does this mean I am wont be allowed? Or have I not understood something that is important? Look like the latter to me.

Using Hypertable for windows

hypertable> select Col_Id1,Col_Id2 from test where Col_Id2 ="131600";

I get the following

Error: Hypertable::Exception: Column predicate name not identical with selected column - HYPERTABLE HQL parse error at Hypertable::Hql::scan_set_column_predicate_name::operator () (c:\soft dev\devel\hypertable\ht4w\src\cc\hypertable\lib\HqlParser.h:825) - HYPERTABLE HQ L parse error

This works as docs state.

select Col_Id2 from test where Col_Id2 ="131600";

Any help and guidance appreciated.

Thanks.

Wajih

Answer 1

You can use

SELECT * FROM table WHERE ROW = "rowkey";

type "help select" in the shell to get a full list of options and examples.