patternsqlMinor
System names of returned columns
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returnedsystemcolumnsnames
Problem
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:
I'm not in control of the input queries, they are provided by end users.
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 nameI'm not in control of the input queries, they are provided by end users.
Solution
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);Code Snippets
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);Context
StackExchange Database Administrators Q#295406, answer score: 4
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