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Function
OCh
-
Delete
Field
Parameter
Block:
00:
FILE_HANDLE
File Identifier
01:
FIELD_NAME
Pointer
to
Field
Name
Return Value:
AX:
STATUS
Error
code
The
FILEHANDLE
parameter
specifies
the
file
handle
of
a previously
opened
database
file.
The
FIELDNAME
parameter
specifies the
offset
from
the
segment
in
DS
of
an
ASCIIZ
string
which
gives the
name
of
the
field
to
be
deleted.
Deletion
of
a
field
is
not
allowed
if
there
is
an
open
record.
The
operation
will
fail
and
return
an
error
code
in
this
case.
The
data
for
the specified
field
will
be
removed
from
all
records
in
the
specified
file.
Error
Returns:
90
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