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SQL Anywhere 17.0 introduces many new features and changes across the software in the areas of programming interfaces, security, performance, SQL support, catalog changes, and administration tools.
Check the readme.txt file for additional information about the software, including feature information that was added after the documentation was completed.
The readme.txt files for all of the SQL Anywhere support
packages and patch-level upgrades can be found at http://sqlasupport.sap.com/readme/index.html
.
This functionality replaces the OData Server utility.
OData Producer information is stored in the database and OData server information is specified by network protocol options. See OData server architecture.
The following changes have been made to the database server to support this feature:
MANAGE ODATA system privilege
VERIFY ODATA system privilege
See System privileges.
CREATE ODATA PRODUCER statement. See CREATE ODATA PRODUCER statement.
ALTER ODATA PRODUCER statement. See ALTER ODATA PRODUCER statement.
COMMENT statement. See COMMENT statement.
DROP ODATA PRODUCER statement. See DROP ODATA PRODUCER statement.
SYSODATAPRODUCER system view. See SYSODATAPRODUCER system view.
ODataAddresses
ODataSecureAddresses
The -xs database server option now supports the ODATA protocol. See -xs database server option.
ExitOnError (EXIT) protocol option. See ExitOnError (EXIT) protocol option.
HttpMyIP (ME) protocol option. See HttpMyIP protocol option.
SecureMyIP protocol option. See SecureMyIP protocol option.
LogFile (LOG) protocol option. See LogFile (LOG) protocol option.
LogVerbosity protocol option. See LogVerbosity protocol option.
QuietConsole (QUIET) protocol option. See QuietConsole (QUIET) protocol option.
SecureServerPort (HTTPSPORT) protocol option. See SecureServerPort (HTTPSPORT) protocol option.
ServerPort (PORT) protocol option. See ServerPort (PORT) protocol option.
SSLKeyStore (KEYSTORE) protocol option. See SSLKeyStore (KEYSTORE) protocol option.
SSLKeyStorePassword (KEYSTOREPASSWORD) protocol option. See SSLKeyStorePassword (KEYSTOREPASSWORD) protocol option.
The ServiceOperationsColumnNames option allows service operations to use the result set column names from the database when naming the properties of the ComplexType used in the ReturnType. The default behavior is to generate the names of properties for complex types returned by service operations. See How to configure the OData server.
A new CSRFTokenTimeout option enables the feature and represents the number of seconds that CSRF tokens are valid for. The CSRF tokens feature protects OData Producers from cross-site request forgery attacks. See How to protect against cross-site request forgery attacks.
The repeatable request feature allows clients to handle unreliable HTTP communications with an OData Producer. If an OData Producer fails to receive a response to a data modification request, then the client can repeat the request without risking database corruption. See How to set up repeatable requests.
New OData Service Definition Language (OSDL) syntax adds the ability to perform the following tasks:
Explicitly set the name of tables that are exposed through an OData Producer.
Explicitly include or exclude columns.
Define entity sets with generated keys.
Define associations between entities, including complex associations that use an underlying association table.
Define navigation properties.
Define concurrency token on entities for optimistic concurrency control.
Define service operations to be exposed through an OData Producer.
The OData server now supports multiple customizable OData Producers that allow you to establish multiple database connections. Use the new embedded HTTP server option, Producers, in your OData server configuration to create OData Producers.
OData Producers now support Optimistic Concurrency Control as defined by versions 2.0 of the OData Specification. The concurrencytoken clause of the ENTITY OSDL statement is used to generate ETags that identify the state of an entity instance at the time the instance is requested.
The SQL used to generate an ETag uses SHA256 hash functions and can be complex given the types of properties (columns) and number of properties included in the concurrency token.See ENTITY statement.OData Producers can accommodate most database procedures and functions that have parameters starting with the @ character.
Service operation names and parameter names, with the exception of @name parameters, must be valid OData identifiers.
OData Producers now supports deep insert requests. These are requests to insert an entity where some links are not references to existing entities and contain new inlined entities that are also to be inserted. Deep inserts may be nested 10 deep.
Restore a database to a specified time stamp or to an offset in the transaction log. The following changes have been made to allow you to use this feature:
Specify more than one directory for the transaction log location when restoring a database. To do this, use a semicolon as a delimiter between the directory names. See -ad database option.
Recover to a specified offset in the transaction log by using this option. See -ruo database option.
Recover to a specified time stamp by using this option. See -ru database option.
The Transaction Log utility (dblog), the Log Translation utility (dbtran), and the Information utility (dbinfo), now include more time-related information in their output.
The Translation Log utility (dblog) has a new option, the -ft option, for specifying a timeline when reloading SQL Remote consolidated databases. See Transaction Log utility (dblog).
See also:
The following enhancements allow your applications to resolve identifiers and parameters for SQL statements at execution time. These enhancements improve security by reducing the need to use EXECUTE IMMEDIATE statements and by increasing protection against SQL injection. These enhancements also provide more flexibility to your application when the name of an object, or the value for a statement option, is not known until execution time.
Specify a variable for the user name and/or object name in a statement by using an enhancement to the identifier syntax ('[@variable-name]'). Supported objects you can indirectly refer to in this manner include owners, tables, columns, and the new mutexes, and semaphores. See Indirect identifiers.
Create a variable of type TABLE REF to reference a base table, temporary table, or view, and then refer to the table reference variable instead of specifying the object name directly in DML statements and as parameters in functions and procedures. See TABLE REF data type.
The following statements now support variables for parameters in their syntax. The variables are resolved just prior to the statement being executed.
ALTER DATABASE statement (database upgrade required)
CREATE MIRROR SERVER statement (database upgrade required)
ALTER MIRROR SERVER statement (database upgrade required)
CREATE SUBSCRIPTION statement (database upgrade required)
CREATE PROCEDURE statement [Web services] (database upgrade required)
ALTER PROCEDURE statement (database upgrade required)
CREATE FUNCTION statement [Web services] (database upgrade required)
ALTER FUNCTION statement (database upgrade required)
CREATE EVENT statement (database upgrade required)
ALTER EVENT statement (database upgrade required)
CREATE EXTERNLOGIN statement
DROP EXTERNLOGIN statement
CREATE SERVER statement
ALTER SERVER statement
CREATE SEMAPHORE statement
DROP SEMAPHORE statement
NOTIFY SEMAPHORE statement
WAITFOR SEMAPHORE statement
CREATE MUTEX statement
DROP MUTEX statement
LOCK MUTEX statement
RELEASE MUTEX statement
Build user-defined mutexes and semaphores into your application logic to achieve locking behavior and control and communicate the availability of resources. See Mutexes and semaphores.
Several changes have been made to support this feature:
New mutex-related statements: CREATE MUTEX, LOCK MUTEX, RELEASE MUTEX, and DROP MUTEX.
See CREATE MUTEX statement, LOCK MUTEX statement, RELEASE MUTEX statement, and DROP MUTEX statement.New semaphore-related statements: CREATE SEMAPHORE, WAITFOR SEMAPHORE, NOTIFY SEMAPHORE, and DROP SEMAPHORE. See CREATE SEMAPHORE statement, WAITFOR SEMAPHORE statement, NOTIFY SEMAPHORE statement, and DROP SEMAPHORE statement.
New ISYSMUTEXSEMAPHORE system table to store the definitions of all permanent mutexes and semaphores in the database. Access its content by using the new SYSMUTEXSEMAPHORE system view. See SYSMUTEXSEMAPHORE system view.
New sp_list_mutexes_semaphores system procedure to return the list of all mutexes and semaphores in the database. See sp_list_mutexes_semaphores system procedure.
Enhancements to sa_conn_info system procedure to add two new columns, LockObject and LockObjectType, to store the name and type of the object associated with the lock. See sa_conn_info system procedure.
Enhancements to the sa_locks system procedure to include information about locks on mutexes. See sa_locks system procedure.
New system privileges to support the administration and usage of mutexes and semaphores: CREATE ANY MUTEX SEMAPHORE, UPDATE ANY MUTEX SEMAPHORE, and DROP ANY MUTEX SEMAPHORE. See System privileges.
Two new connection properties, LockObjectOID and LockObjectType, allow you to query the object ID and type of object that a connection is blocked on. See List of connection properties.
You can now create a simulated time zone and set your database to use this time zone, if you want your database to behave as though it is running on a time zone other than the system time zone of the database server. See Time zone management.
New special values: CURRENT SERVER TIME, CURRENT SERVER DATE, and CURRENT SERVER TIMESTAMP. See CURRENT SERVER TIME special value, CURRENT SERVER DATE special value, and CURRENT SERVER TIMESTAMP special value.
A Node.js driver is available for download from the Node Packaged Modules web site as well as GitHub. The Node.js JavaScript API can be used to connect to SQL Anywhere databases, issue SQL queries, and obtain result sets.
JavaScript stored procedures and functions can be called from the database in the same manner as user-defined SQL stored procedures and functions
A JavaScript driver is now included with SQL Anywhere. The XS JavaScript API can be used to connect to databases, issue SQL queries, and obtain result sets. See The JavaScript external environment.
A JavaScript driver is now included with SQL Anywhere. The XS JavaScript API can be used to connect to databases, issue SQL queries, and obtain result sets.
The CREATE TABLE statement now supports the use of the OR REPLACE clause. See CREATE TABLE statement.
You can now create a table based directly on the definition of another table; clone a table with additional columns, constraints, and LIKE clauses; or create a table based on a SELECT statement. See CREATE TABLE statement.
Use the %TYPE and %ROWTYPE attributes to define the data type(s) based on the data type of other objects. When creating schema objects such as columns, use the %TYPE attribute to set the data type of the object you are creating or altering, to the data type of a column in a table or view. Use the %ROWTYPE attribute to set the data types to the composite data type for a row in a table or view. When creating variables, you can also use the %TYPE and %ROWTYPE attributes to set the data type to the data type of temporary objects such as variables and cursors. See %TYPE and %ROWTYPE attributes.
The following statements and functions are enhanced by this feature:
The following enhancements for creating, altering, and dropping SAP HANA remote servers have been added:
Support for SAP HANA syntax for creating, altering, and dropping remote servers using CREATE REMOTE SOURCE, ALTER REMOTE SOURCE, and DROP REMOTE SOURCE statements, instead of CREATE SERVER, ALTER SERVER, and DROP SERVER statements.
Support for SAP HANA syntax for specifying underscores in server class names. For example, you can specify HANAODBC or HANA_ODBC.
Support SAP HANA syntax for creating proxy tables using the CREATE VIRTUAL TABLE. See CREATE TABLE statement.