It's not a plain SQL script. Commands may vary between databases, so it's a set of static and dynamically created SQL queries encoded into nxdbmgr code.

I change the upgrade code to re-create tables instead of adding constraints, hopefully it will work.

Attached is a latest version of nxdbmgr.exe.

Best regards,
Victor

nxdbmgr.exe

C:\NetXMS\bin>nxdbmgr upgrade -t
NetXMS Database Manager Version 0.2.23-rc1

Configuration file OK
Upgrading database...
Upgrading from version 80 to 81
>>> SELECT item_id,schedule FROM dci_schedules
>>> DROP TABLE dci_schedules
>>> CREATE TABLE dci_schedules (schedule_id integer not null,item_id integer not
 null,schedule varchar(255) not null,PRIMARY KEY(item_id,schedule_id))
>>> ALTER TABLE address_lists ADD PRIMARY KEY (list_type,community_id,addr_type,
addr1,addr2)
SQL query failed (General SQL Server error: Check messages from the SQL Server.)
:
ALTER TABLE address_lists ADD PRIMARY KEY (list_type,community_id,addr_type,addr
1,addr2)
Rolling back last stage due to upgrade errors...
Database upgrade failed

When executing the command from query analyzer, the error is bellow .

Server: Msg 8111, Level 16, State 1, Line 1
Cannot define PRIMARY KEY constraint on nullable column in table 'address_lists'.
Server: Msg 1750, Level 16, State 1, Line 1
Could not create constraint. See previous errors.

Can you give me the full upgrade script that you´re using on this executable ?
I can try to work on it .. , as seems that I´m the only one having problems to upgrade ...

Best regards,
Victor

nxdbmgr.exe