Hello. I'm working on a project using WinCC Unified and SQL Server database. I need to export some tags and alarms through OPC UA (MatrikonOPC Server). Everything is working good, I'm able to open the database using MS SQL Management Studio, I can see the tags being created, and the Matrikon software is connectig to it like a charm.

However I'm strugling to do the data mapping configuration. The database has a lot of tables and I didn't find any sort of documentation explaning where should I look to find the tags and correspondent values I must explort in a same table.

After digging for some hours, what I got until this moment is that the TAGs are stored in HMI_RT_1_TagLogging > LoggingTag and the values are logged in HMI_RT_1_TLG_957_date_time > dbo.LoggedProcessValue (one new data base per day).

In this manual(https://cache.industry.siemens.com/dl/files/859/109782859/att_1066978/v6/109782859_WinCC_Unified_Logging_DOC_V1.0_EN.pdf), at page 97, it shows how to create a Custom Query to do something similar to what I need.

Is this the only option or there is a simple way?

Thanks in advance.