Dette er bestemt et problem med datamodellen, hvad angår dette krav. Jeg kan foreslå to muligheder:
Mulighed # 1: Opret en enkelt tabel SPORTS ved at kombinere alle tabeller og have en kolonne sport_type. Dette vil gøre det muligt at bruge én udvalgt forespørgsel i funktionen.
select HOME,AWAY,COMP_NAME, M_TIME from SPORTS s
where s.HOME LIKE (:p_search_string) or s.AWAY LIKE (:p_search_string)
and sport_type in
(
'SOCCER',
'BASKETBALL',
'HANDBALL',
'ICE_HOCKEY',
'TENIST',
'VOLLEYBALL'
)
Mulighed # 2:
Create a view by combining all these tables and select from that view in this function.
CREATE OR REPLACE VIEW VW_SPORTS
AS
select HOME,AWAY,COMP_NAME, M_TIME, 'SOCCER' SPORT_TYPE from SOCCER
union all
select HOME,AWAY,LISTS,M_TIME,'BASKETBALL' SPORT_TYPE from BASKETBALL
union all
select HOME,AWAY,COMP,M_TIME,'HANDBALL' SPORT_TYPE from HANDBALL
union all
select HOME,AWAY,LISTS,M_TIME,'ICE_HOCKEY' SPORT_TYPE from ICE_HOCKEY
union all
select HOME,AWAY,COMP,M_TIME,'TENIST' SPORT_TYPE from TENISt
union all
select HOME,AWAY,LISTS,M_TIME,'VOLLEYBALL' SPORT_TYPE from VOLLEYBALL v;
FUNCTION SEARACH_FOR_GAMES ( p_search_string in varchar2 )
return weak_cur
IS
SEARCH_FIXID WEAK_CUR;
BEGIN
OPEN SEARCH_FIXID FOR
select HOME,AWAY,COMP_NAME, M_TIME from VW_SPORTS s
where s.HOME LIKE (:p_search_string) or s.AWAY LIKE (:p_search_string)
and s.SPOR_TYPE IN
(
'SOCCER',
'BASKETBALL',
'HANDBALL',
'ICE_HOCKEY',
'TENIST',
'VOLLEYBALL'
);
RETURN SEARCH_FIXID;
END SEARACH_FOR_GAMES;