AÇIKLAMA (Transact-SQL)

Applies to:Azure Synapse Analytics (yalnızca ayrılmış SQL havuzu)

Azure Synapse Analytics SQL statement için query planını döndürür, ancak bu açıklama çalıştırılmaz. EXPLAIN ile hangi işlemlerin veri taşıması gerektirdiğini önizlemek ve sorgu işlemlerinin tahmini maliyetlerini görmek için kullanın. WITH RECOMMENDATIONSapply to Azure Synapse Analytics.

Syntax

EXPLAIN [WITH_RECOMMENDATIONS] SQL_statement  
[;]  

Arguments

SQL_statement

EXPLAIN'in çalışacağı SQL ifadesi. SQL_statement bu komutlardan herhangi biri olabilir: SELECT, INSERT, UPDATE, DELETECREATE TABLE AS SELECT, , . CREATE REMOTE TABLE

WITH_RECOMMENDATIONS

SQL ifadesi performansını optimize etmek için önerilerle birlikte sorgu planını geri gönderin.

Permissions

SHOWPLAN izni ve SQL_statement çalıştırmak için izin gerektirir. Bkz. Permissions: GRANT, DENY, REVOKE (Azure Synapse Analytics, Parallel Data Warehouse).

Dönüş değeri

EXPLAIN komutundan gelen dönüş değeri bir XML belgesidir. Bu XML belgesi, verilen sorgu için sorgu planındaki tüm işlemleri listeler; her biri etiketle <dsql_operation> kaplıdır. Geri dönüş değeri nvarchar(max) türündedir.

Geri dönen sorgu planı, ardışık SQL ifadelerini gösterir; sorgu çalıştığında paralel işlemler içerebilir, bu yüzden gösterilen bazı ardışık ilemeler aynı anda çalışabilir.

Dönüş değeri XML'nin yapısı şöyledir:

\<?xml version="1.0" encoding="utf-8"?>  
<dsql_query>  
  <sql>. . .</sql>  
  <params />  
  <dsql_operations>  
    <dsql_operation>  
     . . .      
    </dsql_operation>  
    [ . . . n ]  
  <dsql_operations>  
</dsql_query>  

XML etiketleri şu bilgileri içerir:

Limitations

EXPLAIN yalnızca optimize edilebilir sorgulara uygulanabilir; bu sorgular, bir EXPLAIN komutunun sonuçlarına göre geliştirilebilir veya değiştirilebilir. Desteklenen EXPLAIN komutları önceki bölümde verilmiştir. Desteklenmeyen bir sorgu tipiyle EXPLAIN kullanmaya çalışmak ya hata döndürür ya da sorgu yankılanır.

EXPLAIN kullanıcı işlemlerinde desteklenmez.

Examples

Aşağıdaki örnek, bir SELECT ifadesi üzerinde çalıştırılan EXPLAIN komutunu ve XML sonucunu gösterir.

EXPLAIN beyanı göndermek

Bu örnek için gönderilen komut şudur:

-- Uses AdventureWorks  
  
EXPLAIN   
    SELECT CAST (AVG(YearlyIncome) AS int) AS AverageIncome,   
        CAST(AVG(FIS.SalesAmount) AS int) AS AverageSales,   
        G.StateProvinceName, T.SalesTerritoryGroup  
    FROM dbo.DimGeography AS G  
    JOIN dbo.DimSalesTerritory AS T  
        ON G.SalesTerritoryKey = T.SalesTerritoryKey  
    JOIN dbo.DimCustomer AS C  
        ON G.GeographyKey = C.GeographyKey  
    JOIN dbo.FactInternetSales AS FIS  
        ON C.CustomerKey = FIS.CustomerKey  
    WHERE T.SalesTerritoryGroup IN ('North America', 'Pacific')  
        AND Gender = 'F'  
    GROUP BY G.StateProvinceName, T.SalesTerritoryGroup  
    ORDER BY AVG(YearlyIncome) DESC;  
GO  

EXPLAIN seçeneğiyle ifadeyi çalıştırdıktan sonra, mesaj sekmesi explain başlıklı tek bir satır sunar ve XML metni \<?xml version="1.0" encoding="utf-8"?> ile başlayarak XML penceresinde tüm metni açmak için XML'i seç. Aşağıdaki yorumları daha iyi anlamak için SSDT'de hat numaralarının görüntülenmesini açmalısınız.

Hat numaralarını aç

1. Çıktı açıklama sekmesinde göründüğünde, TOOLS menüsünde Seçenekler'i seçin.

2. Metin Düzenleyici bölümünü genişletin, XML'i genişletin ve ardından Genel seçin.

3. Ekran alanında Hat numaralarını kontrol edin.

4. Tamam'ı seçin.

Örnek: ANLAT çıktı

EXPLAIN komutunun satır numaraları açık iken XML sonucu şudur:

1  \<?xml version="1.0" encoding="utf-8"?>  
2  <dsql_query>  
3    <sql>SELECT CAST (AVG(YearlyIncome) AS int) AS AverageIncome,   
4          CAST(AVG(FIS.SalesAmount) AS int) AS AverageSales,   
5          G.StateProvinceName, T.SalesTerritoryGroup  
6      FROM dbo.DimGeography AS G  
7      JOIN dbo.DimSalesTerritory AS T  
8          ON G.SalesTerritoryKey = T.SalesTerritoryKey  
9      JOIN dbo.DimCustomer AS C  
10          ON G.GeographyKey = C.GeographyKey  
11      JOIN dbo.FactInternetSales AS FIS  
12          ON C.CustomerKey = FIS.CustomerKey  
13      WHERE T.SalesTerritoryGroup IN ('North America', 'Pacific')  
14          AND Gender = 'F'  
15      GROUP BY G.StateProvinceName, T.SalesTerritoryGroup  
16      ORDER BY AVG(YearlyIncome) DESC</sql>  
17    <dsql_operations total_cost="0.926237696" total_number_operations="9">  
18      <dsql_operation operation_type="RND_ID">  
19        <identifier>TEMP_ID_16893</identifier>  
20      </dsql_operation>  
21      <dsql_operation operation_type="ON">  
22        <location permanent="false" distribution="AllComputeNodes" />  
23        <sql_operations>  
24          <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_16893] ([CustomerKey] INT NOT NULL, [GeographyKey] INT, [YearlyIncome] MONEY ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>  
25        </sql_operations>  
26      </dsql_operation>  
27      <dsql_operation operation_type="BROADCAST_MOVE">  
28        <operation_cost cost="0.121431552" accumulative_cost="0.121431552" average_rowsize="16" output_rows="31.6228" />  
29        <source_statement>SELECT [T1_1].[CustomerKey] AS [CustomerKey],  
30         [T1_1].[GeographyKey] AS [GeographyKey],  
31         [T1_1].[YearlyIncome] AS [YearlyIncome]  
32  FROM   (SELECT [T2_1].[CustomerKey] AS [CustomerKey],  
33                 [T2_1].[GeographyKey] AS [GeographyKey],  
34                 [T2_1].[YearlyIncome] AS [YearlyIncome]  
35          FROM   [AdventureWorksPDW2012].[dbo].[DimCustomer] AS T2_1  
36          WHERE  ([T2_1].[Gender] = CAST (N'F' COLLATE Latin1_General_100_CI_AS_KS_WS AS NVARCHAR (1)) COLLATE Latin1_General_100_CI_AS_KS_WS)) AS T1_1</source_statement>  
37        <destination_table>[TEMP_ID_16893]</destination_table>  
38      </dsql_operation>  
39      <dsql_operation operation_type="RND_ID">  
40        <identifier>TEMP_ID_16894</identifier>  
41      </dsql_operation>  
42      <dsql_operation operation_type="ON">  
43        <location permanent="false" distribution="AllDistributions" />  
44        <sql_operations>  
45          <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_16894] ([StateProvinceName] NVARCHAR(50) COLLATE Latin1_General_100_CI_AS_KS_WS, [SalesTerritoryGroup] NVARCHAR(50) COLLATE Latin1_General_100_CI_AS_KS_WS NOT NULL, [col] BIGINT, [col1] MONEY NOT NULL, [col2] BIGINT, [col3] MONEY NOT NULL ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>  
46        </sql_operations>  
47      </dsql_operation>  
48      <dsql_operation operation_type="SHUFFLE_MOVE">  
49        <operation_cost cost="0.804806144" accumulative_cost="0.926237696" average_rowsize="232" output_rows="108.406" />  
50        <source_statement>SELECT [T1_1].[StateProvinceName] AS [StateProvinceName],  
51         [T1_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup],  
52         [T1_1].[col2] AS [col],  
53         [T1_1].[col] AS [col1],  
54         [T1_1].[col3] AS [col2],  
55         [T1_1].[col1] AS [col3]  
56  FROM   (SELECT ISNULL([T2_1].[col1], CONVERT (MONEY, 0.00, 0)) AS [col],  
57                 ISNULL([T2_1].[col3], CONVERT (MONEY, 0.00, 0)) AS [col1],  
58                 [T2_1].[StateProvinceName] AS [StateProvinceName],  
59                 [T2_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup],  
60                 [T2_1].[col] AS [col2],  
61                 [T2_1].[col2] AS [col3]  
62          FROM   (SELECT   COUNT_BIG([T3_2].[YearlyIncome]) AS [col],  
63                           SUM([T3_2].[YearlyIncome]) AS [col1],  
64                           COUNT_BIG(CAST ((0) AS INT)) AS [col2],  
65                           SUM([T3_2].[SalesAmount]) AS [col3],  
66                           [T3_2].[StateProvinceName] AS [StateProvinceName],  
67                           [T3_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup]  
68                  FROM     (SELECT [T4_1].[SalesTerritoryKey] AS [SalesTerritoryKey],  
69                                   [T4_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup]  
70                            FROM   [AdventureWorksPDW2012].[dbo].[DimSalesTerritory] AS T4_1  
71                            WHERE  (([T4_1].[SalesTerritoryGroup] = CAST (N'North America' COLLATE Latin1_General_100_CI_AS_KS_WS AS NVARCHAR (13)) COLLATE Latin1_General_100_CI_AS_KS_WS)  
72                                    OR ([T4_1].[SalesTerritoryGroup] = CAST (N'Pacific' COLLATE Latin1_General_100_CI_AS_KS_WS AS NVARCHAR (7)) COLLATE Latin1_General_100_CI_AS_KS_WS))) AS T3_1  
73                           INNER JOIN  
74                           (SELECT [T4_1].[SalesTerritoryKey] AS [SalesTerritoryKey],  
75                                   [T4_2].[YearlyIncome] AS [YearlyIncome],  
76                                   [T4_2].[SalesAmount] AS [SalesAmount],  
77                                   [T4_1].[StateProvinceName] AS [StateProvinceName]  
78                            FROM   [AdventureWorksPDW2012].[dbo].[DimGeography] AS T4_1  
79                                   INNER JOIN  
80                                   (SELECT [T5_2].[GeographyKey] AS [GeographyKey],  
81                                           [T5_2].[YearlyIncome] AS [YearlyIncome],  
82                                           [T5_1].[SalesAmount] AS [SalesAmount]  
83                                    FROM   [AdventureWorksPDW2012].[dbo].[FactInternetSales] AS T5_1  
84                                           INNER JOIN  
85                                           [tempdb].[dbo].[TEMP_ID_16893] AS T5_2  
86                                           ON ([T5_1].[CustomerKey] = [T5_2].[CustomerKey])) AS T4_2  
87                                   ON ([T4_2].[GeographyKey] = [T4_1].[GeographyKey])) AS T3_2  
88                           ON ([T3_1].[SalesTerritoryKey] = [T3_2].[SalesTerritoryKey])  
89                  GROUP BY [T3_2].[StateProvinceName], [T3_1].[SalesTerritoryGroup]) AS T2_1) AS T1_1</source_statement>  
90        <destination_table>[TEMP_ID_16894]</destination_table>  
91        <shuffle_columns>StateProvinceName;</shuffle_columns>  
92      </dsql_operation>  
93      <dsql_operation operation_type="ON">  
94        <location permanent="false" distribution="AllComputeNodes" />  
95        <sql_operations>  
96          <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_16893]</sql_operation>  
97        </sql_operations>  
98      </dsql_operation>  
99      <dsql_operation operation_type="RETURN">  
100        <location distribution="AllDistributions" />  
101        <select>SELECT   [T1_1].[col] AS [col],  
102           [T1_1].[col1] AS [col1],  
103           [T1_1].[StateProvinceName] AS [StateProvinceName],  
104           [T1_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup],  
105           [T1_1].[col2] AS [col2]  
106  FROM     (SELECT CONVERT (INT, [T2_1].[col], 0) AS [col],  
107                   CONVERT (INT, [T2_1].[col1], 0) AS [col1],  
108                   [T2_1].[StateProvinceName] AS [StateProvinceName],  
109                   [T2_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup],  
110                   [T2_1].[col] AS [col2]  
111            FROM   (SELECT CASE  
112                            WHEN ([T3_1].[col] = CAST ((0) AS BIGINT)) THEN CAST (NULL AS MONEY)  
113                            ELSE ([T3_1].[col1] / CONVERT (MONEY, [T3_1].[col], 0))  
114                           END AS [col],  
115                           CASE  
116                            WHEN ([T3_1].[col2] = CAST ((0) AS BIGINT)) THEN CAST (NULL AS MONEY)  
117                            ELSE ([T3_1].[col3] / CONVERT (MONEY, [T3_1].[col2], 0))  
118                           END AS [col1],  
119                           [T3_1].[StateProvinceName] AS [StateProvinceName],  
120                           [T3_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup]  
121                    FROM   (SELECT ISNULL([T4_1].[col], CONVERT (BIGINT, 0, 0)) AS [col],  
122                                   ISNULL([T4_1].[col1], CONVERT (MONEY, 0.00, 0)) AS [col1],  
123                                   ISNULL([T4_1].[col2], CONVERT (BIGINT, 0, 0)) AS [col2],  
124                                   ISNULL([T4_1].[col3], CONVERT (MONEY, 0.00, 0)) AS [col3],  
125                                   [T4_1].[StateProvinceName] AS [StateProvinceName],  
126                                   [T4_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup]  
127                            FROM   (SELECT   SUM([T5_1].[col]) AS [col],  
128                                             SUM([T5_1].[col1]) AS [col1],  
129                                             SUM([T5_1].[col2]) AS [col2],  
130                                             SUM([T5_1].[col3]) AS [col3],  
131                                             [T5_1].[StateProvinceName] AS [StateProvinceName],  
132                                             [T5_1].[SalesTerritoryGroup] AS [SalesTerritoryGroup]  
133                                    FROM     [tempdb].[dbo].[TEMP_ID_16894] AS T5_1  
134                                    GROUP BY [T5_1].[StateProvinceName], [T5_1].[SalesTerritoryGroup]) AS T4_1) AS T3_1) AS T2_1) AS T1_1  
135  ORDER BY [T1_1].[col2] DESC</select>  
136      </dsql_operation>  
137      <dsql_operation operation_type="ON">  
138        <location permanent="false" distribution="AllDistributions" />  
139        <sql_operations>  
140          <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_16894]</sql_operation>  
141        </sql_operations>  
142      </dsql_operation>  
143    </dsql_operations>  
144  </dsql_query>  

EXPLAIN çıktısının anlamı

Önceki kod bloğundaki çıktı 144 numaralı satır içerir. Bu sorgudan elde ettiğiniz sonuçlar biraz farklı olabilir. Aşağıdaki liste önemli bölümleri açıklamaktadır.

• 3'ten 16'ya kadar olan satırlar, analiz edilen sorguya dair bir açıklama sunar.

• 17. satır, toplam işlem sayısının 9 olacağını belirtir. Her işlemin başlangıcını, dsql_operation kelimelerini arayarak bulabilirsiniz.

• 18. hat 1. operasyonu başlatıyor. 18. ve 19. satırlar, RND_ID işleminin nesne açıklaması için kullanılacak rastgele bir kimlik numarası oluşturacağını gösterir. Örnek çıktıda tanımlanan nesne TEMP_ID_16893. Numaran farklı olacak.

• 20. hat 2. operasyona başladı. 21'den 25'e kadar olan satırlar: Tüm hesaplama düğümlerinde, adında geçici bir tablo oluşturun TEMP_ID_16893.

• 26. hat 3. çalışmaya başladı. 27'den 37'ye kadar olan hatlar: Veriyi yayın taşıması kullanarak aktarın TEMP_ID_16893 . Her hesaplama düğümüne gönderilen sorgu sağlanır. 37. satır, hedef tablonun olarak belirtir.TEMP_ID_16893

• 38. hat 4. çalışmaya başladı. 39'dan 40'a kadar olan satırlar: Bir tablo için rastgele bir kimlik oluşturun. TEMP_ID_16894 örnekteki kimlik numarasıdır. Numaran farklı olacak.

• 41. hat 5 numaralı çalışmaya başladı. 42'den 46'ya kadar olan satırlar: Tüm düğümlerde geçici bir tablo oluşturuluşu .TEMP_ID_16894

• Hat 47 6 operasyonunu başlatıyor. 48'den 91'e kadar olan satırlar: Çeşitli tablolardan (dahil TEMP_ID_16893) verileri tabloya TEMP_ID_16893karıştırma işlemi ile taşın. Her hesaplama düğümüne gönderilen sorgu sağlanır. 90. satır, hedef tabloyu olarak belirtir.TEMP_ID_16894 91. satırda sütunlar belirtilir.

• Hat 92 7 numaralı çalışmaya başlamıştır. 93'ten 97'ye kadar olan hatlar: Tüm hesaplama düğümlerinde, geçici tablo TEMP_ID_16893kaldırıldı.

• Hat 98, 8 numaralı operasyona başlamıştır. 99'dan 135'e kadar olan hatlar: Sonuçları müşteriye döndür. Sonuçları almak için verilen sorguyu kullanıyor.

• 136 numaralı hat 9 numaralı çalışmaya başlamaktadır. 137'den 140'a kadar olan hatlar: Tüm düğümlerde geçici tablo TEMP_ID_16894kaldırıldı.

EXPLAIN beyanı göndermek WITH_RECOMMENDATIONS

EXPLAIN WITH_RECOMMENDATIONS
select count(*)
from ((select distinct c_last_name, c_first_name, d_date
       from store_sales, date_dim, customer
       where store_sales.ss_sold_date_sk = date_dim.d_date_sk
         and store_sales.ss_customer_sk = customer.c_customer_sk
         and d_month_seq between 1194 and 1194+11)
       except
      (select distinct c_last_name, c_first_name, d_date
       from catalog_sales, date_dim, customer
       where catalog_sales.cs_sold_date_sk = date_dim.d_date_sk
         and catalog_sales.cs_bill_customer_sk = customer.c_customer_sk
         and d_month_seq between 1194 and 1194+11)
) top_customers

EXPLAIN WITH_RECOMMENDATIONS için örnek çıktı

Aşağıdaki örnek çıktı, önerilen bir maddeleştirilmiş görünümün oluşturulmasını içerir.View1

<?xml version="1.0" encoding="utf-8"?>
<dsql_query number_nodes="1" number_distributions="8" number_distributions_per_node="8">
  <sql>select count(*) 
from ((select distinct c_last_name, c_first_name, d_date
       from store_sales, date_dim, customer
       where store_sales.ss_sold_date_sk = date_dim.d_date_sk
         and store_sales.ss_customer_sk = customer.c_customer_sk
         and d_month_seq between 1194 and 1194+11)
       except
      (select distinct c_last_name, c_first_name, d_date
       from catalog_sales, date_dim, customer
       where catalog_sales.cs_sold_date_sk = date_dim.d_date_sk
         and catalog_sales.cs_bill_customer_sk = customer.c_customer_sk
         and d_month_seq between 1194 and 1194+11)
) top_customers</sql>
  <materialized_view_candidates>
    <materialized_view_candidates with_constants="False">CREATE MATERIALIZED VIEW View1 WITH (DISTRIBUTION = HASH([Expr0])) AS
SELECT [tpcds10].[dbo].[customer].[c_last_name] AS [Expr0],
       [tpcds10].[dbo].[customer].[c_first_name] AS [Expr1],
       [tpcds10].[dbo].[date_dim].[d_date] AS [Expr2],
       [tpcds10].[dbo].[date_dim].[d_month_seq] AS [Expr3]
FROM [dbo].[store_sales],
     [dbo].[date_dim],
     [dbo].[customer]
WHERE ([tpcds10].[dbo].[store_sales].[ss_customer_sk]=[tpcds10].[dbo].[customer].[c_customer_sk])
  AND ([tpcds10].[dbo].[store_sales].[ss_sold_date_sk]=[tpcds10].[dbo].[date_dim].[d_date_sk])
GROUP BY [tpcds10].[dbo].[customer].[c_last_name],
         [tpcds10].[dbo].[customer].[c_first_name],
         [tpcds10].[dbo].[date_dim].[d_date],
         [tpcds10].[dbo].[date_dim].[d_month_seq]</materialized_view_candidates>
    <materialized_view_candidates with_constants="False">CREATE MATERIALIZED VIEW View2 WITH (DISTRIBUTION = HASH([Expr0])) AS
SELECT [tpcds10].[dbo].[customer].[c_last_name] AS [Expr0],
       [tpcds10].[dbo].[customer].[c_first_name] AS [Expr1],
       [tpcds10].[dbo].[date_dim].[d_date] AS [Expr2],
       [tpcds10].[dbo].[date_dim].[d_month_seq] AS [Expr3]
FROM [dbo].[catalog_sales],
    [dbo].[date_dim],
     [dbo].[customer]
WHERE ([tpcds10].[dbo].[catalog_sales].[cs_bill_customer_sk]=[tpcds10].[dbo].[customer].[c_customer_sk])
  AND ([tpcds10].[dbo].[catalog_sales].[cs_sold_date_sk]=[tpcds10].[dbo].[date_dim].[d_date_sk])
GROUP BY [tpcds10].[dbo].[customer].[c_last_name],
         [tpcds10].[dbo].[customer].[c_first_name],
         [tpcds10].[dbo].[date_dim].[d_date],
         [tpcds10].[dbo].[date_dim].[d_month_seq]</materialized_view_candidates>
    <materialized_view_candidates with_constants="True">CREATE MATERIALIZED VIEW View3 WITH (DISTRIBUTION = HASH([Expr0])) AS
SELECT [tpcds10].[dbo].[customer].[c_last_name] AS [Expr0],
       [tpcds10].[dbo].[customer].[c_first_name] AS [Expr1],
       [tpcds10].[dbo].[date_dim].[d_date] AS [Expr2]
FROM [dbo].[store_sales],
     [dbo].[date_dim],
     [dbo].[customer]
WHERE ([tpcds10].[dbo].[store_sales].[ss_customer_sk]=[tpcds10].[dbo].[customer].[c_customer_sk])
  AND ([tpcds10].[dbo].[store_sales].[ss_sold_date_sk]=[tpcds10].[dbo].[date_dim].[d_date_sk])
  AND ([tpcds10].[dbo].[date_dim].[d_month_seq]&gt;=(1194))
  AND ([tpcds10].[dbo].[date_dim].[d_month_seq]&lt;=(1205))
GROUP BY [tpcds10].[dbo].[customer].[c_last_name],
         [tpcds10].[dbo].[customer].[c_first_name],
         [tpcds10].[dbo].[date_dim].[d_date]</materialized_view_candidates>
    <materialized_view_candidates with_constants="True">CREATE MATERIALIZED VIEW View4 WITH (DISTRIBUTION = HASH([Expr0])) AS
SELECT [tpcds10].[dbo].[customer].[c_last_name] AS [Expr0],
       [tpcds10].[dbo].[customer].[c_first_name] AS [Expr1],
       [tpcds10].[dbo].[date_dim].[d_date] AS [Expr2]
FROM [dbo].[catalog_sales],
     [dbo].[date_dim],
     [dbo].[customer]
WHERE ([tpcds10].[dbo].[catalog_sales].[cs_bill_customer_sk]=[tpcds10].[dbo].[customer].[c_customer_sk])
  AND ([tpcds10].[dbo].[catalog_sales].[cs_sold_date_sk]=[tpcds10].[dbo].[date_dim].[d_date_sk])
  AND ([tpcds10].[dbo].[date_dim].[d_month_seq]&gt;=(1194))
  AND ([tpcds10].[dbo].[date_dim].[d_month_seq]&lt;=(1205))
GROUP BY [tpcds10].[dbo].[customer].[c_last_name],
         [tpcds10].[dbo].[customer].[c_first_name],
         [tpcds10].[dbo].[date_dim].[d_date]</materialized_view_candidates>
  </materialized_view_candidates>
  <dsql_operations total_cost="3472197.35650704" total_number_operations="28">
    <dsql_operation operation_type="RND_ID">
      <identifier>TEMP_ID_1</identifier>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_1] ([c_customer_sk] INT NOT NULL, [c_first_name] CHAR(20) COLLATE SQL_Latin1_General_CP1_CI_AS, [c_last_name] CHAR(30) COLLATE SQL_Latin1_General_CP1_CI_AS ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="BROADCAST_MOVE">
      <operation_cost cost="842400" accumulative_cost="842400" average_rowsize="54" output_rows="65000000" GroupNumber="44" />
      <source_statement>SELECT [T1_1].[c_customer_sk] AS [c_customer_sk],
       [T1_1].[c_first_name] AS [c_first_name],
       [T1_1].[c_last_name] AS [c_last_name]
FROM   [tpcds10].[dbo].[customer] AS T1_1</source_statement>
      <destination_table>[TEMP_ID_1]</destination_table>
    </dsql_operation>
    <dsql_operation operation_type="RND_ID">
      <identifier>TEMP_ID_2</identifier>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_2] ([d_date_sk] INT NOT NULL, [d_date] DATE ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="BROADCAST_MOVE">
      <operation_cost cost="0.62729352" accumulative_cost="842400.62729352" average_rowsize="7" output_rows="373.389" GroupNumber="43" />
      <source_statement>SELECT [T1_1].[d_date_sk] AS [d_date_sk],
       [T1_1].[d_date] AS [d_date]
FROM   (SELECT [T2_1].[d_date_sk] AS [d_date_sk],
               [T2_1].[d_date] AS [d_date]
        FROM   [tpcds10].[dbo].[date_dim] AS T2_1
        WHERE  (([T2_1].[d_month_seq] &gt;= CAST ((1194) AS INT))
                AND ([T2_1].[d_month_seq] &lt;= CAST ((1205) AS INT)))) AS T1_1</source_statement>
      <destination_table>[TEMP_ID_2]</destination_table>
    </dsql_operation>
    <dsql_operation operation_type="RND_ID">
      <identifier>TEMP_ID_3</identifier>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllDistributions" />
      <sql_operations>
        <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_3] ([cs_bill_customer_sk] INT, [d_date] DATE ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="SHUFFLE_MOVE">
      <operation_cost cost="610362.9" accumulative_cost="1452763.52729352" average_rowsize="7" output_rows="2906490000" GroupNumber="57" />
      <source_statement>SELECT [T1_1].[cs_bill_customer_sk] AS [cs_bill_customer_sk],
       [T1_1].[d_date] AS [d_date]
FROM   (SELECT [T2_2].[cs_bill_customer_sk] AS [cs_bill_customer_sk],
               [T2_1].[d_date] AS [d_date]
        FROM   [tempdb].[dbo].[TEMP_ID_2] AS T2_1
               INNER JOIN
               [tpcds10].[dbo].[catalog_sales] AS T2_2
               ON ([T2_2].[cs_sold_date_sk] = [T2_1].[d_date_sk])) AS T1_1</source_statement>
      <destination_table>[TEMP_ID_3]</destination_table>
      <shuffle_columns>d_date;</shuffle_columns>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_2]</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="RND_ID">
      <identifier>TEMP_ID_4</identifier>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_4] ([c_customer_sk] INT NOT NULL, [c_first_name] CHAR(20) COLLATE SQL_Latin1_General_CP1_CI_AS, [c_last_name] CHAR(30) COLLATE SQL_Latin1_General_CP1_CI_AS ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="BROADCAST_MOVE">
      <operation_cost cost="842400" accumulative_cost="2295163.52729352" average_rowsize="54" output_rows="65000000" GroupNumber="36" />
      <source_statement>SELECT [T1_1].[c_customer_sk] AS [c_customer_sk],
       [T1_1].[c_first_name] AS [c_first_name],
       [T1_1].[c_last_name] AS [c_last_name]
FROM   [tpcds10].[dbo].[customer] AS T1_1</source_statement>
      <destination_table>[TEMP_ID_4]</destination_table>
    </dsql_operation>
    <dsql_operation operation_type="RND_ID">
      <identifier>TEMP_ID_5</identifier>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_5] ([d_date_sk] INT NOT NULL, [d_date] DATE ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="BROADCAST_MOVE">
      <operation_cost cost="0.62729352" accumulative_cost="2295164.15458704" average_rowsize="7" output_rows="373.389" GroupNumber="35" />
      <source_statement>SELECT [T1_1].[d_date_sk] AS [d_date_sk],
       [T1_1].[d_date] AS [d_date]
FROM   (SELECT [T2_1].[d_date_sk] AS [d_date_sk],
               [T2_1].[d_date] AS [d_date]
        FROM   [tpcds10].[dbo].[date_dim] AS T2_1
        WHERE  (([T2_1].[d_month_seq] &gt;= CAST ((1194) AS INT))
                AND ([T2_1].[d_month_seq] &lt;= CAST ((1205) AS INT)))) AS T1_1</source_statement>
      <destination_table>[TEMP_ID_5]</destination_table>
    </dsql_operation>
    <dsql_operation operation_type="RND_ID">
      <identifier>TEMP_ID_6</identifier>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllDistributions" />
      <sql_operations>
        <sql_operation type="statement">CREATE TABLE [tempdb].[dbo].[TEMP_ID_6] ([ss_customer_sk] INT, [d_date] DATE ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="SHUFFLE_MOVE">
      <operation_cost cost="1177033.2" accumulative_cost="3472197.35458704" average_rowsize="7" output_rows="5604920000" GroupNumber="54" />
      <source_statement>SELECT [T1_1].[ss_customer_sk] AS [ss_customer_sk],
       [T1_1].[d_date] AS [d_date]
FROM   (SELECT [T2_2].[ss_customer_sk] AS [ss_customer_sk],
               [T2_1].[d_date] AS [d_date]
        FROM   [tempdb].[dbo].[TEMP_ID_5] AS T2_1
               INNER JOIN
               [tpcds10].[dbo].[store_sales] AS T2_2
               ON ([T2_2].[ss_sold_date_sk] = [T2_1].[d_date_sk])) AS T1_1</source_statement>
      <destination_table>[TEMP_ID_6]</destination_table>
      <shuffle_columns>d_date;</shuffle_columns>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_5]</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="Control" />
     <sql_operations>
        <sql_operation type="statement">CREATE TABLE [tempdb].[QTables].[QTable_87367172aa554f06b73cf3ed97e5b985] ([col] BIGINT ) WITH(DATA_COMPRESSION=PAGE);</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="PARTITION_MOVE">
      <operation_cost cost="0.00192" accumulative_cost="3472197.35650704" average_rowsize="8" output_rows="1" GroupNumber="66" />
      <location distribution="AllDistributions" />
      <source_statement>SELECT [T1_1].[col] AS [col]
FROM   (SELECT   COUNT_BIG(CAST ((0) AS INT)) AS [col]
        FROM     (SELECT   0 AS [col]
                  FROM     [tempdb].[dbo].[TEMP_ID_4] AS T3_1
                           INNER JOIN
                           [tempdb].[dbo].[TEMP_ID_6] AS T3_2
                           ON ([T3_2].[ss_customer_sk] = [T3_1].[c_customer_sk])
                  GROUP BY [T3_1].[c_last_name], [T3_1].[c_first_name], [T3_2].[d_date]
                  HAVING   NOT EXISTS (SELECT   1 AS C1
                                       FROM     [tempdb].[dbo].[TEMP_ID_1] AS T4_1
                                                INNER JOIN
                                                [tempdb].[dbo].[TEMP_ID_3] AS T4_2
                                                ON ([T4_2].[cs_bill_customer_sk] = [T4_1].[c_customer_sk])
                                       GROUP BY [T4_1].[c_last_name], [T4_1].[c_first_name], [T4_2].[d_date]
                                       HAVING   (([T3_1].[c_last_name] = [T4_1].[c_last_name]
                                                  OR ([T3_1].[c_last_name] IS NULL
                                                      AND [T4_1].[c_last_name] IS NULL))
                                                 AND ([T3_1].[c_first_name] = [T4_1].[c_first_name]
                                                      OR ([T3_1].[c_first_name] IS NULL
                                                          AND [T4_1].[c_first_name] IS NULL))
                                                     AND ([T3_2].[d_date] = [T4_2].[d_date]
                                                          OR ([T3_2].[d_date] IS NULL
                                                              AND [T4_2].[d_date] IS NULL))))) AS T2_1
        GROUP BY [T2_1].[col]) AS T1_1</source_statement>
      <destination>Control</destination>
      <destination_table>[QTable_87367172aa554f06b73cf3ed97e5b985]</destination_table>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllDistributions" />
      <sql_operations>
        <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_6]</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_4]</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllDistributions" />
      <sql_operations>
        <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_3]</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="AllComputeNodes" />
      <sql_operations>
        <sql_operation type="statement">DROP TABLE [tempdb].[dbo].[TEMP_ID_1]</sql_operation>
      </sql_operations>
    </dsql_operation>
    <dsql_operation operation_type="RETURN">
      <location distribution="Control" />
      <select>SELECT [T1_1].[col] AS [col]
FROM   (SELECT CONVERT (INT, [T2_1].[col], 0) AS [col]
        FROM   (SELECT ISNULL([T3_1].[col], CONVERT (BIGINT, 0, 0)) AS [col]
                FROM   (SELECT SUM([T4_1].[col]) AS [col]
                        FROM   [tempdb].[QTables].[QTable_87367172aa554f06b73cf3ed97e5b985] AS T4_1) AS T3_1) AS T2_1) AS T1_1</select>
    </dsql_operation>
    <dsql_operation operation_type="ON">
      <location permanent="false" distribution="Control" />
      <sql_operations>
        <sql_operation type="statement">DROP TABLE [tempdb].[QTables].[QTable_87367172aa554f06b73cf3ed97e5b985]</sql_operation>
      </sql_operations>
    </dsql_operation>
  </dsql_operations>
</dsql_query>

İlgili içerik

• sys.pdw_materialized_view_column_distribution_properties (Transact-SQL)
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