Void Initialization

Data type VOID initialization can only be applied to scalars. Creating a vector of VOID type is not supported.

$ x=NULL;
$ typestr x;
VOID

$ take(NULL, 4);
Not allowed to create void vector

Adding a NULL column to a table is not supported.

$ t = table(rand(10,10) as x)
$ addColumn(t, `col1, VOID)
Invalid data type: 0
$ t[`col1]=NULL
Not allowed to create void vector

You can use select with NULL to generate a table with VOID column.

$ tmp=select *, NULL from t
$ typestr(tmp[`NULL])
$ VOID VECTOR