以下は、テスト テーブルと分割ビューです。
use tempdb
go
SET STATISTICS IO ON
create table T1 (C int primary key);
create table T2 (C int primary key);
create table T3 (C int primary key);
create table T4 (C int primary key);
create table T5 (C int primary key);
create table T6 (C int primary key);
create table TA (c int primary key, id int);
insert into dbo.T1(C) values (1),(2),(3),(4),(5),(6),(7),(8)
insert into dbo.T2(C) values (1),(2),(3),(4),(5),(6),(7),(8)
insert into dbo.T3(C) values (1),(2),(3),(4),(5),(6),(7),(8)
insert into dbo.T4(C) values (1),(2),(3),(4),(5),(6),(7),(8)
insert into dbo.T5(C) values (1),(2),(3),(4),(5),(6),(7),(8)
insert into dbo.T6(C) values (1),(2),(3),(4),(5),(6),(7),(8)
insert into TA values (1, 1), (2, 2)
go
create view V(Id, C)
as
select 1, * from T1 union all
select 2, * from T2 union all
select 3, * from T3 union all
select 4, * from T4 union all
select 5, * from T5 union all
select 6, * from T6
ただし、次のビューはすべてのテーブルをスキャンしますか? それを避ける最善の方法は何ですか？
SELECT * FROM dbo.V join TA on TA.c = v.c
where ta.c = 2 and ta.id = v.id
option (recompile)