Changes to global variables

Global variables in default statements

You can now use global variables in default clauses. For example:

create table foo (c1 int, c2 int default @@spid)

NULL values for @@servername

Earlier versions of Adaptive Server allowed you to use a NULL value for @@servername with monitoring tables. With Adaptive Server 12.5.2, @@servername cannot be NULL when you are using monitoring tables, sp_sysmon cache wizard, or sp_monitor.

If you do issue any of these commands with @@servername set to NULL, Adaptive Server issues error message 5629, “remote distributed transaction participant cannot be started.” If this occurs:

1. Define a local server name with sp_addserver.

2. Restart the server.

You must also perform these steps if you are using the Real Time Messaging Services option. See the Real Time Messaging Service User’s Guide for more information.

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