Hmm, I can do this
CREATE TABLE ROB/NODDS (MYCOL CHAR (5 ) NOT NULL WITH DEFAULT)
SELECT * FROM syspartitionstat WHERE SYSTEM_TABLE_SCHEMA='ROB' AND
and it appears. Yet there is no DDS source member.
Perhaps you were thinking that a table created with no external definition
CRTPF FILE(ROB/HEDONGETIT) RCDLEN(50)
In that case, you are correct. It does not appear in SYSPARTITIONSTAT
even though it has a partition (aka member).
It also does not appear in SYSTABLES.
This is the killer:
Data Base File Attributes
Externally described file . . . . . . . . . : No