select
display_name
, 'Table one' as TableName
from
one
where
[display_name] = 'Искомое слово'
union all
select
display_name
, 'Table two' as TableName
from
two
where
[display_name] = 'Искомое слово'
union all
select
display_name
, 'Table three' as TableName
from
three
where
[display_name] = 'Искомое слово'
SELECT * FROM
( SELECT 'one' AS TableName, 'display' AS FieldName, display_name AS Search FROM One AS O1
UNION
SELECT 'one', 'name', name FROM One AS O2
UNION
SELECT 'two', 'display', display_name FROM Two AS T1
UNION
SELECT 'two', 'name', name FROM Two AS T2
UNION
SELECT 'three', 'display', display_name FROM Three AS T3
UNION
SELECT 'three', 'name', name FROM Three AS T4) AS TableSearch
WHERE Search = 'Word'