I need to select all columns from two tables, but need to be able to differentiate between them in the result.
Is there a shorthand method of giving each column in the result an alias?
For example:
SELECT t1.*开发者_如何学C AS t1.SOMETHING
, t2.* AS SOMETHING_ELSE
FROM TABLE1
INNER JOIN TABLE2
ON SOMETHING = SOMETHING_ELSE
In the results, all columns from table one would be prefixes t1, while all results from table two would be prefixes t2.
Any advice appreciated.
Thanks.
No, you'll need to name them explicitly.
No, ALIAS
is only for single columns. The only shorthand is to remove the AS
:
SELECT column_123 col FROM x
Returns col
as the alias.
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