SET DESCRIPTOR
SET DESCRIPTOR
SET DESCRIPTOR - set information in an SQL descriptor area
Synopsis
SET DESCRIPTORdescriptor_namedescriptor_header_item=value[, ... ] SET DESCRIPTORdescriptor_nameVALUEnumberdescriptor_item=value[, ...]
Description
SET DESCRIPTOR
populates an SQL descriptor
area with values. The descriptor area is then typically used to
bind parameters in a prepared query execution.
This command has two forms: The first form applies to the descriptor " header " , which is independent of a particular datum. The second form assigns values to particular datums, identified by number.
Parameters
-
descriptor_name# -
A descriptor name.
-
descriptor_header_item# -
A token identifying which header information item to set. Only
COUNT, to set the number of descriptor items, is currently supported. -
number# -
The number of the descriptor item to set. The count starts at 1.
-
descriptor_item# -
A token identifying which item of information to set in the descriptor. See Section 36.7.1 for a list of supported items.
-
value# -
A value to store into the descriptor item. This can be an SQL constant or a host variable.
Examples
EXEC SQL SET DESCRIPTOR indesc COUNT = 1; EXEC SQL SET DESCRIPTOR indesc VALUE 1 DATA = 2; EXEC SQL SET DESCRIPTOR indesc VALUE 1 DATA = :val1; EXEC SQL SET DESCRIPTOR indesc VALUE 2 INDICATOR = :val1, DATA = 'some string'; EXEC SQL SET DESCRIPTOR indesc VALUE 2 INDICATOR = :val2null, DATA = :val2;
Compatibility
SET DESCRIPTOR
is specified in the SQL standard.