SQL select join: is it possible to prefix all columns as 'prefix.*'?

Question

I\'m wondering if this is possible in SQL. Say you have two tables A and B, and you do a select on table A and join on table B:

SELECT a.*, b.* FROM TABLE_A a         


        

Answer 1

Developing from this solution, this is how I would approach the problem:

First create a list of all the AS statements:

DECLARE @asStatements varchar(8000)

SELECT @asStatements = ISNULL(@asStatements + ', ','') + QUOTENAME(table_name) + '.' + QUOTENAME(column_name) + ' AS ' + '[' + table_name + '.' + column_name + ']'
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'TABLE_A' OR TABLE_NAME = 'TABLE_B'
ORDER BY ORDINAL_POSITION

Then use it in your query:

EXEC('SELECT ' + @asStatements + ' FROM TABLE_A a JOIN TABLE_B b USING (some_id)');

However, this might need modifications because something similar is only tested in SQL Server. But this code doesn't exactly work in SQL Server because USING is not supported.

Please comment if you can test/correct this code for e.g. MySQL.