Uygulamamda, "dosya" tablosunda arama yapan bir sorgu var.
"Dosyalar" tablosu, "f". "Oluşturuldu" ile bölünmüştür (tablo tanımına bakın ve müşteri 19 için "26 milyon satır (" f "." Cid = 19) vardır.
Burada bu sorguyu yaparsanız nokta:
SELECT "f"."id" AS "FileId"
, "f"."name" AS "FileName"
, "f"."year" AS "Fileyear"
, "f"."cid" AS "clientId"
, "f"."created" AS "FileDate"
, CASE WHEN ("vnVE0"."value" is not null AND "vnVE0"."value" != '')
THEN CAST("vnVE0"."value" AS decimal(28,2))
ELSE 0 END AS "keywordValueCol0_numeric"
FROM files "f"
OUTER APPLY
(
SELECT DISTINCT
VT.[value]
FROM dbo.value_number AS VT
WHERE
VT.id_file = F.id
AND VT.id_field = 260
) AS "vnVE0"
WHERE "grapado" IS NULL AND "masterversion" IS NULL AND ("f"."year" = 2013 OR "f"."year" = 0) AND "f"."cid" = 19
GROUP BY "f"."id", "f"."name", "f"."year", "f"."cid", "f"."created", CASE WHEN ("vnVE0"."value" is not null AND "vnVE0"."value" != '')
THEN CAST("vnVE0"."value" AS decimal(28,2))
ELSE 0 END
ORDER BY (SELECT NULL)
OFFSET 0 ROWS FETCH NEXT 50 ROWS ONLY;
Sonuçları aşağıdaki yürütme planıyla 0 saniyede alıyorum: https://www.brentozar.com/pastetheplan/?id=SkV0-FDcG
Ama "name" ile sipariş denerseniz sorgu çok yavaş olur:
SELECT "f"."id" AS "FileId"
, "f"."name" AS "FileName"
, "f"."year" AS "Fileyear"
, "f"."cid" AS "clientId"
, "f"."created" AS "FileDate"
, CASE WHEN ("vnVE0"."value" is not null AND "vnVE0"."value" != '')
THEN CAST("vnVE0"."value" AS decimal(28,2))
ELSE 0 END AS "keywordValueCol0_numeric"
FROM files "f"
OUTER APPLY
(
SELECT DISTINCT
VT.[value]
FROM dbo.value_number AS VT
WHERE
VT.id_file = F.id
AND VT.id_field = 260
) AS "vnVE0"
WHERE "grapado" IS NULL AND "masterversion" IS NULL AND ("f"."year" = 2013 OR "f"."year" = 0) AND "f"."cid" = 19
GROUP BY "f"."id", "f"."name", "f"."year", "f"."cid", "f"."created", CASE WHEN ("vnVE0"."value" is not null AND "vnVE0"."value" != '')
THEN CAST("vnVE0"."value" AS decimal(28,2))
ELSE 0 END
ORDER BY "f"."name"
OFFSET 0 ROWS FETCH NEXT 50 ROWS ONLY;
Bu sorgu, aşağıdaki yürütme planıyla bana sonuçları döndürmek için 11 dakika sürüyor: https://www.brentozar.com/pastetheplan/?id=Sk3Fbtv9M
Ayrıca, sırayı sütuna göre değiştirirsem sonuç aynı olur.
Yürütme planında görebileceğiniz gibi, "files_mv" dizininin maliyeti% 61'dir, bu dizin tanımıdır:
CREATE NONCLUSTERED INDEX [files_mv] ON [dbo].[files]
(
[masterversion] ASC,
[year] ASC,
[cat_id] ASC,
[cid] ASC,
[eid] ASC,
[grapado] ASC,
[sub_id] ASC,
[tip_id] ASC
)
INCLUDE ( [id],
[name]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
GO
SQL Server'ı Azure ile kullanıyorum. Özellikle, fiyatlandırma / model katmanı "S4 Estándar (200 DTU)" ile Azure SQL Veritabanı.
Çok fazla veri alıyorum ama internet bağlantısının bir darboğaz olmadığını düşünüyorum, çünkü diğer sorgularda da çok fazla veri alıyorum ve daha hızlılar.
Ayrıca, bu tablolarda büyük bir veri ekleme yapıyorum ve birkaç gün içinde dosya tablosunda ~ 240 milyon satır (bir cid için) ve value_number tablosunda ~ 480 milyon satır olacak.
ilave bilgi
Partiton işlevi "PF_files_partitioning":
CREATE PARTITION FUNCTION PF_files_partitioning (DATETIME2(7))
AS
RANGE LEFT FOR VALUES ( '2013-03-31 23:59:59',
'2013-06-30 23:59:59',
'2013-09-30 23:59:59',
'2013-12-31 23:59:59',
'2014-03-31 23:59:59',
'2014-06-30 23:59:59',
'2014-09-30 23:59:59',
'2014-12-31 23:59:59',
'2015-03-31 23:59:59',
'2015-06-30 23:59:59',
'2015-09-30 23:59:59',
'2015-12-31 23:59:59',
'2016-03-31 23:59:59',
'2016-06-30 23:59:59',
'2016-09-30 23:59:59',
'2016-12-31 23:59:59',
'2017-03-31 23:59:59',
'2017-06-30 23:59:59',
'2017-09-30 23:59:59',
'2017-12-31 23:59:59',
'2018-03-31 23:59:59')
Bölüm düzeni "PS_files_partitioning":
CREATE PARTITION SCHEME PS_files_partitioning AS PARTITION PF_files_partitioning ALL TO ([PRIMARY]);
** Her bölümde yaklaşık 15 milyon satırım olacak.
dosya tablosu:
CREATE TABLE [dbo].[files](
[id] [bigint] IDENTITY(1,1) NOT NULL,
[cid] [tinyint] NOT NULL,
[eid] [bigint] NOT NULL,
[cat_id] [bigint] NOT NULL,
[tip_id] [bigint] NULL,
[sub_id] [bigint] NULL,
[year] [smallint] NOT NULL,
[caducidad] [smallint] NULL,
[grapadopri] [int] NOT NULL,
[grapado] [bigint] NULL,
[name] [nvarchar](255) NOT NULL,
[extension] [tinyint] NOT NULL,
[size] [bigint] NOT NULL,
[id_doc] [bit] NOT NULL,
[observaciones] [nvarchar](255) NOT NULL,
[indexed] [bit] NOT NULL,
[signed] [bit] NOT NULL,
[created] [datetime2](7) NOT NULL,
[name_lower] [nvarchar](255) NOT NULL,
[modified] [datetime2](7) NULL,
[related] [bit] NOT NULL,
[masterversion] [bigint] NULL,
[versioned] [bit] NOT NULL,
[hwsignature] [tinyint] NOT NULL,
[blockedUserId] [smallint] NULL,
CONSTRAINT [PK_files_id] PRIMARY KEY CLUSTERED
(
[id] ASC,
[created] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created]),
CONSTRAINT [files$estructure_unique] UNIQUE NONCLUSTERED
(
[cat_id] ASC,
[tip_id] ASC,
[sub_id] ASC,
[year] ASC,
[name] ASC,
[grapado] ASC,
[created] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
)
değer_sayısı tablosu:
CREATE TABLE [dbo].[value_number](
[id] [bigint] IDENTITY(1,1) NOT NULL,
[id_file] [bigint] NOT NULL DEFAULT ((0)),
[id_field] [bigint] NOT NULL DEFAULT ((0)),
[value] [nvarchar](255) NULL DEFAULT (NULL),
[id_doc] [bigint] NULL DEFAULT (NULL)
CONSTRAINT [PK_value_number_id] PRIMARY KEY CLUSTERED
(
[id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
)
Dosya dizinleri tablosu
CREATE NONCLUSTERED INDEX [files_clientes] ON [dbo].[files]
(
[cid] ASC
)
INCLUDE ([id]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [files_grapado] ON [dbo].[files]
(
[grapado] ASC
)
INCLUDE ( [id],
[name]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [files_mv] ON [dbo].[files]
(
[masterversion] ASC,
[year] ASC,
[cat_id] ASC,
[cid] ASC,
[eid] ASC,
[grapado] ASC,
[sub_id] ASC,
[tip_id] ASC
)
INCLUDE ( [id],
[name]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [files_ocr] ON [dbo].[files]
(
[cid] ASC,
[grapado] ASC,
[indexed] ASC,
[masterversion] ASC,
[extension] ASC
)
INCLUDE ( [id],
[eid],
[cat_id],
[tip_id],
[sub_id],
[year],
[name]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [files_ocr2] ON [dbo].[files]
(
[cid] ASC,
[eid] ASC,
[grapado] ASC,
[indexed] ASC,
[masterversion] ASC,
[extension] ASC
)
INCLUDE ( [id],
[cat_id],
[tip_id],
[sub_id],
[year],
[name]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [files_ocr3] ON [dbo].[files]
(
[cid] ASC,
[cat_id] ASC,
[grapado] ASC,
[indexed] ASC,
[masterversion] ASC,
[extension] ASC
)
INCLUDE ( [eid],
[tip_id],
[sub_id],
[year],
[name]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [busqueda_name] ON [dbo].[files]
(
[cid] ASC,
[eid] ASC,
[grapado] ASC,
[year] ASC
)
INCLUDE ( [id],
[cat_id],
[tip_id],
[sub_id],
[grapadopri],
[name],
[size],
[id_doc],
[signed],
[created],
[modified],
[related],
[masterversion]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [busqueda2] ON [dbo].[files]
(
[cid] ASC,
[eid] ASC,
[cat_id] ASC,
[grapado] ASC,
[masterversion] ASC,
[year] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [cid] ON [dbo].[files]
(
[cid] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [eid] ON [dbo].[files]
(
[eid] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [extension] ON [dbo].[files]
(
[extension] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [FK_files_archivo] ON [dbo].[files]
(
[grapado] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [FK_files_tipo] ON [dbo].[files]
(
[tip_id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [grapadopri] ON [dbo].[files]
(
[grapadopri] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [index_all] ON [dbo].[files]
(
[cid] ASC,
[eid] ASC,
[grapado] ASC,
[masterversion] ASC
)
INCLUDE ( [cat_id],
[tip_id],
[sub_id],
[year],
[grapadopri],
[name],
[size],
[id_doc],
[signed],
[created],
[modified],
[related],
[versioned]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [missing_index_7_6] ON [dbo].[files]
(
[cid] ASC,
[eid] ASC,
[grapado] ASC,
[name] ASC,
[year] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [ocrCloudClients] ON [dbo].[files]
(
[grapado] ASC,
[indexed] ASC,
[extension] ASC
)
INCLUDE ( [cid],
[eid],
[cat_id],
[tip_id],
[sub_id]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [searchEntity] ON [dbo].[files]
(
[cid] ASC,
[eid] ASC,
[grapado] ASC,
[masterversion] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
CREATE NONCLUSTERED INDEX [sub_id] ON [dbo].[files]
(
[sub_id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
ON PS_files_partitioning([created])
Değer_sayısı tablosunun dizinleri
CREATE NONCLUSTERED INDEX [searchValues] ON [dbo].[value_number]
(
[id_field] ASC
)
INCLUDE ( [id_file],
[value]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
CREATE NONCLUSTERED INDEX [search] ON [dbo].[value_number]
(
[id_file] ASC,
[id_field] ASC
)
INCLUDE ( [value]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
CREATE NONCLUSTERED INDEX [id_field] ON [dbo].[value_number]
(
[id_field] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
CREATE NONCLUSTERED INDEX [FK_valueesN_documento] ON [dbo].[value_number]
(
[id_doc] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
CREATE NONCLUSTERED INDEX [FK_valueesN_archivo] ON [dbo].[value_number]
(
[id_file] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)
İstatistikler güncel. Yıl ve diğer sütunlar için veri türlerini değiştirdim ve şimdi performans biraz daha iyi görünüyor, ancak yürütme planı hala aynı. Kardinalite Tahminini (değişen indeks) düzeltmeye çalışıyorum, ancak henüz başarılı olamadım. Azure belgelerine göre, veritabanında 130 uyumluluk düzeyim olmalı ve ProductVersion 12.0 ile zaten 100'üm var.