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You need someone like me when you are unable to get the right results from your database (or you don't have time). With my expert understanding of relational databases, I can deal with complex or poorly-designed databases.
Relational databases are based on set theory and logic, and sometimes subtle issues arise.
All I need from you (aside from your query requirements) is detailed information on the tables you want to query, which could be as simple as copying and pasting or making screenshots of the table definitions.
I can also write a DDL query that defines a new table, if that is what you need.
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