This is an example of HELP COLUMN output for the following table definition, which includes a derived period column.
CREATE TABLE employee ( eid INTEGER NOT NULL, name VARCHAR(100) NOT NULL, deptno INTEGER NOT NULL, jobstart DATE NOT NULL, jobend DATE NOT NULL, PERIOD FOR jobduration (jobstart, jobend) PRIMARY INDEX(eid);
Below is the HELP COLUMN output.
HELP COLUMN employee.jobduration;
| Column Name | jobduration |
| Type | PD |
| Nullable | ? |
| Format | ? |
| Max Length | 0 |
| Decimal Total Digits | ? |
| Decimal Fractional Digits | ? |
| Range Low | ? |
| Range High | ? |
| UpperCase | ? |
| Table/View? | T |
| Indexed? | ? |
| Unique? | ? |
| Primary? | ? |
| Title | ? |
| Column Constraint | ? |
| Char Type | ? |
| IdCol Type | ? |
| UDT Name | ? |
| Temporal Column | N |
| Current ValidTime Unique | ? |
| Sequenced ValidTime Unique | ? |
| NonSequenced ValidTime Unique | ? |
| Current TransactionTime Unique | ? |
| Partitioning Column | N |
| Column Partition Number | 0 |
| Column Partition Format | NA |
| Column Partition AC | NC |
| Security Constraint | N |
| Derived_UDT | PP |
| Derived_UDT_FieldID | ? |
| Column Dictionary Name | jobduration |
| Column SQL Name | jobduration |
| Column Name UEscape | ? |
| Dictionary Title | ? |
| SQL Title | ? |
| Title UEscape | ? |
| UDT Database Dictionary Name | ? |
| UDT Database SQL Name | ? |
| UDT Database Name UEscape | ? |
| UDT Dictionary Name | ? |
| UDT SQL Name | ? |
| UDT Name UEscape | ? |
| Without Overlaps Unique | ? |
| Storage Format | ? |