Data Set Options for Relational Databases

CURSOR_TYPE= Data Set Option

Specifies the cursor type for read only and updatable cursors.

Default value:	LIBNAME setting
Valid in:	DATA and PROC steps (when accessing DBMS data using SAS/ACCESS software)
DBMS support:	DB2 under UNIX and PC Hosts, Microsoft SQL Server, ODBC, OLE DB

Syntax
Syntax Description
Details
See Also

Syntax

CURSOR_TYPE=DYNAMIC | FORWARD_ONLY | KEYSET_DRIVEN | STATIC

Syntax Description

DYNAMIC: specifies that the cursor reflects all changes that are made to the rows in a result set as you move the cursor. The data values and the membership of rows in the cursor can change dynamically on each fetch. This is the default for the DB2 under UNIX and PC Hosts, Microsoft SQL Server, and ODBC interfaces. For OLE DB details, see "Details."
FORWARD_ONLY [not valid for OLE DB]: specifies that the cursor functions like a DYNAMIC cursor except that it supports only sequential fetching of rows.
KEYSET_DRIVEN: specifies that the cursor determines which rows belong to the result set when the cursor is opened. However, changes that are made to these rows are reflected as you move the cursor.
STATIC: specifies that the cursor builds the complete result set when the cursor is opened. No changes made to the rows in the result set after the cursor is opened are reflected in the cursor. Static cursors are read-only.

Details

Not all drivers support all cursor types. An error is returned if the specified cursor type is not supported. The driver is allowed to modify the default without an error. See your database documentation for more information.

When no options have been set yet, here are the initial DBMS-specific defaults.

DB2 for UNIX and PC	Microsoft SQL Server	ODBC	OLE DB
KEYSET_DRIVEN	DYNAMIC	FORWARD_ONLY	FORWARD_ONLY

Here are the operation-specific defaults.

Operation	DB2 for UNIX and PC	Microsoft SQL Server	ODBC	OLE DB
insert (UPDATE_SQL=NO)	KEYSET_DRIVEN	DYNAMIC	KEYSET_DRIVEN	FORWARD_ONLY
read (such as PROC PRINT)	driver default			driver default (FORWARD_ONLY)
update (UPDATE_SQL=NO)	KEYSET_DRIVEN	DYNAMIC	KEYSET_DRIVEN	FORWARD_ONLY
CONNECTION=GLOBAL CONNECTION=SHARED		DYNAMIC		DYNAMIC

OLE DB: Here are the OLE DB properties that are applied to an open row set. For details, see your OLE DB programmer reference documentation.

CURSOR_TYPE=	OLE DB Properties Applied
FORWARD_ONLY/DYNAMIC (see "Details")	DBPROP_OTHERINSERT=TRUE, DBPROP_OTHERUPDATEDELETE=TRUE
KEYSET_DRIVEN	DBPROP_OTHERINSERT=FALSE, DBPROP_OTHERUPDATEDELETE=TRUE
STATIC	DBPROP_OTHERINSERT=FALSE, DBPROP_OTHERUPDATEDELETE=FALSE