Description:
Get the sequence number of a field of a record in a table sequence.
Syntax:
r.fno(F)
Note:
The function gets the sequence number of field F of record r in the table sequence; if there is no parameter, return the number of fields in the table sequence in which r locates. If the field cannot be found, a null value will be returned.
Parameter:
|
r |
A record |
|
F |
Field name |
Return value:
The sequence number of a field
Example:
|
|
A |
|
|
1 |
=demo.query("select * from EMPLOYEE") |
|
|
2 |
=A1(2).fno(EID) |
1, which indicates that the sequence number of the field "EID" is 1. |
|
3 |
=A1(2).fno() |
9, which indicates that there are 9 fields in the table "Employee". |
Related functions: