Mitsubishi Electric MELSEC iQ-R Series User Manual page 47

*2 When the access target server type is Oracle, pseudocolumns listed in the table below can be used.
A pseudocolumn behaves like a regular field in a table, but is not actually stored in the table.
A value can be selected from a pseudocolumn, but cannot be inserted, updated, or deleted for it.
Pseudocolumn
ROWID
ROWNUM
Description
A unique ID assigned to each record in a table
A value numbered from 1 in order from the first result narrowed down by a condition in a WHERE clause
2 SPECIFICATIONS
45
2.4 Data Specifications
2