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Inserts:

To insert rows with NULL values you can use Field = 'NULL'(_) or Field = 'NULL'(null2346). For example:

| ?- emp_ins('NULL'(_), ...). $\rightarrow$ inserts a NULL value for ENAME

| ?- emp_ins('NULL'('bound'), ...) $\rightarrow$ inserts a NULL value for ENAME.



Baoqiu Cui
2000-04-23