mirror of
https://github.com/Microsoft/sql-server-samples.git
synced 2025-12-08 14:58:54 +00:00
52 lines
1.9 KiB
Transact-SQL
52 lines
1.9 KiB
Transact-SQL
USE sales
|
|
GO
|
|
|
|
-- Create file format for CSV file with appropriate properties.
|
|
--
|
|
CREATE EXTERNAL FILE FORMAT csv_file
|
|
WITH (
|
|
FORMAT_TYPE = DELIMITEDTEXT,
|
|
FORMAT_OPTIONS(
|
|
FIELD_TERMINATOR = ',',
|
|
STRING_DELIMITER = '"',
|
|
FIRST_ROW = 2,
|
|
USE_TYPE_DEFAULT = TRUE)
|
|
);
|
|
|
|
-- Create external table over HDFS data source (SqlStoragePool) in
|
|
-- SQL Server 2019 big data cluster. The SqlStoragePool data source
|
|
-- is a special data source that is available in any new database in
|
|
-- SQL Master instance.
|
|
--
|
|
CREATE EXTERNAL TABLE [web_clickstreams_hdfs]
|
|
("wcs_click_date_sk" BIGINT , "wcs_click_time_sk" BIGINT , "wcs_sales_sk" BIGINT , "wcs_item_sk" BIGINT , "wcs_web_page_sk" BIGINT , "wcs_user_sk" BIGINT)
|
|
WITH
|
|
(
|
|
DATA_SOURCE = SqlStoragePool,
|
|
LOCATION = '/clickstream_data',
|
|
FILE_FORMAT = csv_file
|
|
);
|
|
GO
|
|
|
|
-- Join external table with local tables
|
|
--
|
|
SELECT
|
|
wcs_user_sk,
|
|
SUM( CASE WHEN i_category = 'Books' THEN 1 ELSE 0 END) AS book_category_clicks,
|
|
SUM( CASE WHEN i_category_id = 1 THEN 1 ELSE 0 END) AS [Home & Kitchen],
|
|
SUM( CASE WHEN i_category_id = 2 THEN 1 ELSE 0 END) AS [Music],
|
|
SUM( CASE WHEN i_category_id = 3 THEN 1 ELSE 0 END) AS [Books],
|
|
SUM( CASE WHEN i_category_id = 4 THEN 1 ELSE 0 END) AS [Clothing & Accessories],
|
|
SUM( CASE WHEN i_category_id = 5 THEN 1 ELSE 0 END) AS [Electronics],
|
|
SUM( CASE WHEN i_category_id = 6 THEN 1 ELSE 0 END) AS [Tools & Home Improvement],
|
|
SUM( CASE WHEN i_category_id = 7 THEN 1 ELSE 0 END) AS [Toys & Games],
|
|
SUM( CASE WHEN i_category_id = 8 THEN 1 ELSE 0 END) AS [Movies & TV],
|
|
SUM( CASE WHEN i_category_id = 9 THEN 1 ELSE 0 END) AS [Sports & Outdoors]
|
|
FROM [dbo].[web_clickstreams_hdfs]
|
|
INNER JOIN item it ON (wcs_item_sk = i_item_sk
|
|
AND wcs_user_sk IS NOT NULL)
|
|
GROUP BY wcs_user_sk;
|
|
GO
|
|
|
|
DROP EXTERNAL TABLE [dbo].[web_clickstreams_hdfs];
|
|
GO |