Xbasic
SQL::RowDataIsNull Method
Syntax
Result_Flag as L = DataIsNull(ColumnIndex as N | ColumnName as C)
Arguments
- Result_Flag
Indicates whether the data is NULL.
- SQL::Row
A SQL::Row object created with a DIM statement.
- ColumnIndex
The index of the column containing the data.
Description
Determine whether a given element is Null.
Discussion
The DataIsNull() method determines whether a given element is NULL.
Example
dim conn as SQL::Connection dim rs as SQL::ResultSet dim row as SQL::Row dim connString as C dim select_exp as C dim list as C connString = "{A5API='Access', FileName='c:\program files\a5v8\mdbfiles\alphasports.mdb'}" select_exp = "select * from customer where bill_state_region = 'ny'" if .not. conn.open(connString) ui_msg_box("Error", conn.CallResult.text) end end if if .not. conn.execute(select_exp) ui_msg_box("Error", conn.CallResult.text) conn.close() end end if rs = conn.ResultSet while rs.NextRow() row = rs.CurrentRow if .not. row.DataIsNull(5) then list = list + row.Data(5) + crlf() end if end while ui_msg_box("Phone Numbers", list) conn.close()
See Also