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