Question

my senior tech prepared a view. viewing the source script, i have trouble understanding where the column label exists as neither tables contain that column. Is it a column that exists as part of a view – on the fly?

select label labelName
, e.name
, e.country 
from entity e

source script:

SELECT e.entity_id
, se.screen_id
, s.country_code
,desc_trans translatedValue
, et.language_code
, cp.NAME name
FROM entity e 
LEFT OUTER JOIN CONTROL_PREFIX cp 
    ON e.CONTROL_PREFIX_CODE = cp.CONTROL_PREFIX_CODE
, entity_trans et
, screen s
, screen_entity se
WHERE e.entity_id = et.entity_id 
AND e.entity_id = se.entity_id 
AND se.screen_id = s.screen_id 
AND e.entity_type_code = 'LB'

UNION

SELECT e.entity_id
, se.screen_id
, s.country_code
, field_name labelName
, label labelText
, NULL translatedValue
, l.language_code
, cp.NAME name
FROM entity e 
LEFT OUTER JOIN CONTROL_PREFIX cp 
    ON e.CONTROL_PREFIX_CODE = cp.CONTROL_PREFIX_CODE
, language l
, screen s
, screen_entity se
WHERE l.language_code NOT IN
(
    SELECT et1.language_code
    FROM entity e1
    , entity_trans et1
    WHERE e1.entity_id = et1.entity_id 
    AND e1.entity_id = e.entity_id 
    AND e1.entity_type_code = 'LB'
) 
AND e.entity_type_code = 'LB' 
AND s.screen_id = se.screen_id 
AND e.entity_id = se.entity_id;

Answer 1

Assuming the SQL you posted is the SQL used to generate the view and is complete

i.e.

create view myView as
select label labelName
, e.name
, e.country 
from entity e

Column Label is on table Entity but appears in the view myView as LabelName.

If entity is the name of the view, you’ll need to provide the source behind that view.