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Jovan Popovic
d1fec550cb
Added Product Catalog demo presented on Sinergija 2016 conference in Belgrade.
103 lines
5.7 KiB
Transact-SQL
103 lines
5.7 KiB
Transact-SQL
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--Combine standard columns with JSON columns.
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select Name,Color,Size,Price,Quantity,Data,Tags
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from Product
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--Use JSON Data in queries
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select ProductID, Name, Color, Size, Price, Quantity, Data, Tags,
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JSON_VALUE(Data, '$.MadeIn') as MadeIn
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from Product
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where JSON_VALUE(Data, '$.Type') = 'part'
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--Use JSON data in any part of query
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select JSON_VALUE(Data, '$.Type') as Type, Color,
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AVG( cast(JSON_VALUE(Data, '$.ManufacturingCost') as float) ) as Cost
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from Product
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group by JSON_VALUE(Data, '$.Type'), Color
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having JSON_VALUE(Data, '$.Type') is not null
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order by JSON_VALUE(Data, '$.Type')
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--Update JSON Data
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--Current values in row:
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select Data,Tags
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from Product
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where ProductID = 16
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--Update values in JSON columns:
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update Product set
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Data = JSON_MODIFY(Data, '$.ManufacturingCost', 10),
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Tags = JSON_MODIFY(Tags, 'append $', 'new')
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where ProductID = 16
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--Verify changes.
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select Data,Tags
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from Product
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where ProductID = 16
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GO
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--Convert JSON object to row.
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declare @product nvarchar(4000) =
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N'{"Name":"BB Ball Bearing","Color":"Magenta","Size":"62","Price":28.9900,"Quantity":80}'
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SELECT *
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FROM OPENJSON (@product)
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WITH (Name nvarchar(50),Color nvarchar(15),Size nvarchar(5),Price money,Quantity int)
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GO
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--Convert JSON array to set of rows.
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DECLARE @products NVARCHAR(4000) =
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N'[
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{"ProductID":15,"Name":"Adjustable Race","Color":"Magenta","Size":"62","Price":100.0000,"Quantity":75,"Data":{"Type":"Part","MadeIn":"China"}},
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{"ProductID":16,"Name":"Bearing Ball","Color":"Magenta","Size":"62","Price":15.9900,"Quantity":90,"Data":{"ManufacturingCost":11.672700,"Type":"Part","MadeIn":"China"},"Tags":["promo"]},
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{"ProductID":17,"Name":"BB Ball Bearing","Color":"Magenta","Size":"62","Price":28.9900,"Quantity":80,"Data":{"ManufacturingCost":21.162700,"Type":"Part","MadeIn":"China"}},
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{"ProductID":18,"Name":"Blade","Color":"Magenta","Size":"62","Price":18.0000,"Quantity":45,"Data":{},"Tags":["new"]},
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{"ProductID":19,"Name":"Sport-100 Helmet, Red","Color":"Red","Size":"72","Price":41.9900,"Quantity":38,"Data":{"ManufacturingCost":30.652700,"Type":"Еquipment","MadeIn":"China"},"Tags":["promo"]},
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{"ProductID":20,"Name":"Sport-100 Helmet, Black","Color":"Black","Size":"72","Price":31.4900,"Quantity":60,"Data":{"ManufacturingCost":22.987700,"Type":"Еquipment","MadeIn":"China"},"Tags":["new","promo"]}
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]'
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SELECT *
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FROM OPENJSON (@products)
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WITH ( Name nvarchar(50),Color nvarchar(15),Size nvarchar(5),Price money,Quantity int,
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Type nvarchar(20) '$.Data.Type',
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Data nvarchar(max) AS JSON)
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GO
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--Query and analyze JSON array.
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DECLARE @products NVARCHAR(MAX) =
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N'[{"ProductID":15,"Name":"Adjustable Race","Color":"Magenta","Size":"62","Price":100.0000,"Quantity":75,"Data":{"Type":"Part","MadeIn":"China"}},{"ProductID":16,"Name":"Bearing Ball","Color":"Magenta","Size":"62","Price":15.9900,"Quantity":90,"Data":{"ManufacturingCost":11.672700,"Type":"Part","MadeIn":"China"},"Tags":["promo"]},{"ProductID":17,"Name":"BB Ball Bearing","Color":"Magenta","Size":"62","Price":28.9900,"Quantity":80,"Data":{"ManufacturingCost":21.162700,"Type":"Part","MadeIn":"China"}},{"ProductID":18,"Name":"Blade","Color":"Magenta","Size":"62","Price":18.0000,"Quantity":45,"Data":{},"Tags":["new"]},{"ProductID":19,"Name":"Sport-100 Helmet, Red","Color":"Red","Size":"72","Price":41.9900,"Quantity":38,"Data":{"ManufacturingCost":30.652700,"Type":"Еquipment","MadeIn":"China"},"Tags":["promo"]},{"ProductID":20,"Name":"Sport-100 Helmet, Black","Color":"Black","Size":"72","Price":31.4900,"Quantity":60,"Data":{"ManufacturingCost":22.987700,"Type":"Еquipment","MadeIn":"China"},"Tags":["new","promo"]},{"ProductID":21,"Name":"Mountain Bike Socks, M","Color":"White","Size":"M","Price":560.9900,"Quantity":30,"Data":{"Type":"Clothes"},"Tags":["sales","promo"]},{"ProductID":22,"Name":"Mountain Bike Socks, L","Color":"White","Size":"L","Price":120.9900,"Quantity":20,"Data":{"ManufacturingCost":88.322700,"Type":"Clothes"},"Tags":["sales","promo"]},{"ProductID":23,"Name":"Long-Sleeve Logo Jersey, XL","Color":"Multi","Size":"XL","Price":44.9900,"Quantity":60,"Data":{"ManufacturingCost":32.842700,"Type":"Clothes"},"Tags":["sales","promo"]},{"ProductID":24,"Name":"Road-650 Black, 52","Color":"Black","Size":"52","Price":704.6900,"Quantity":70,"Data":{"Type":"Bike","MadeIn":"UK"}},{"ProductID":25,"Name":"Mountain-100 Silver, 38","Color":"Silver","Size":"38","Price":359.9900,"Quantity":45,"Data":{"ManufacturingCost":262.792700,"Type":"Bike","MadeIn":"UK"},"Tags":["promo"]},{"ProductID":26,"Name":"Road-250 Black, 48","Color":"Black","Size":"48","Price":299.0200,"Quantity":25,"Data":{"ManufacturingCost":218.284600,"Type":"Bike","MadeIn":"UK"},"Tags":["new","promo"]},{"ProductID":27,"Name":"ML Bottom Bracket","Price":101.2400,"Quantity":50,"Data":{"Type":"Part","MadeIn":"China"}},{"ProductID":28,"Name":"HL Bottom Bracket","Price":121.4900,"Quantity":65,"Data":{"ManufacturingCost":88.687700,"Type":"Part","MadeIn":"China"}}]'
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SELECT ISNULL(Color, 'N/A') Color, AVG(Price) AvgPrice, MIN(Quantity) MinQuantity
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FROM OPENJSON (@products)
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WITH (Name nvarchar(50),Color nvarchar(15),Size nvarchar(5),Price money,Quantity int)
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group by Color
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having MIN(Quantity) > 10
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order by Color
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GO
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--Find rows that contain some value in JSON array.
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select ProductID, Name, Color, Size, Price, Quantity, Tags
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from Product
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CROSS APPLY OPENJSON(Tags)
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where value = 'promo'
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GO
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--Format query results as JSON (with error).
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select Name,Color,Size,Price,Quantity,Data,Tags
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from Product
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FOR JSON PATH
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--Format query results as JSON.
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select Name,Color,Size,Price,Quantity,JSON_QUERY(Data) as Data, JSON_QUERY(Tags) as Tags
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from Product
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FOR JSON PATH
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--Export single row as JSON.
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select Name,Color,Size,Price,Quantity,JSON_QUERY(Data) as Data, JSON_QUERY(Tags) as Tags
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from Product
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where ProductID = 17
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FOR JSON PATH, WITHOUT_ARRAY_WRAPPER |