All we need is an easy explanation of the problem, so here it is.
I’m looking for a way to obtain system names of columns returned by an arbitrary sql query using Sql Server 2019. Here are a few sample queries and desired results:
company: id, name employee: id, name, companyId select * from company | tableName | columnName | company id company name select id as whatever from company | tableName | columnName | company id select e.id, e.name, c.name from employee e join company c on e.companyId = c.id | tableName | columnName | employee id employee name company name
I’m not in control of the input queries, they are provided by end users.
How to solve :
I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.
The sys.dm_exec_describe_first_result_set DMF returns column meta-data for the specified query, including additional information about the source column when
@include_browse_information = 1 (the third parameter) is specified:
SELECT source_schema AS tableSchema , source_table AS tableName , source_column AS columnName FROM sys.dm_exec_describe_first_result_set(N'select * from company;',NULL,1);
Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂