I know I am probably going to get probably a few people saying I'm rude but I believe in being up-front and questions seem to be going in a circle and people asking the same questions over and over again.
Your trying to get running and manage, and even customize a fairly complex Database structure without doing enough basic tutorials in learning the SQL language.
Whenever you want to make some customizations or apply fixes on the database side it often requires changes to the stored procedures, and perhaps even the Table structures (Not referring to the data records here).
Rather than trying to learn from a complex DB like a private Server I suggest you start with the basics and work from the bottom up.
My Recommendations:
Step1. Learn the basic SQL syntax. Learn how to write SELECT, UPDATE, and DELETE statements from your memory. The EXECUTE command is very useful here too.
ref:
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Step2. Learn about Creating/Modifying Table Structures. You will pass this hurdle when you have a good idea on how to create, and modify tables and what different data-types there are and perhaps some of the MIN, MAX ranges, and a rough understanding of Primary and Foreign Keys (Shaiya pServers do not use PKs,FKs much, not in MSSQL's native way at least anyway).
Step3. Learn about creating Stored Procedures and User Custom Functions. You will pass this when you can comfortably program a Stored-Procedure to implement a piece of business Logic that you want to do from Scratch. You will also be comfortable in Modify pre-existing SP's.
Final Note:
Google has a multitude of resources. Granted I did learn some SQL in a business Environment for a year or so but the majority of my learning and experience came from Internet Resources, and the most important "Practising" what you are doing. This knowledge you can directly apply to pServers and not just Shaiya, almost all MMO's use DB's, this forum uses a DB, they are all over the Web, in finance, business, nearly everywhere where organised data storage has become a necessity. And the beauty of this gained knowledge is the syntax hasn't changed in a large number of years once you learn it's like riding a bike and I would almost consider it an essential skill in Computing.
/end rant
Best of luck. ^-^