There are new OPENJSON and FOR JSON commands in SQL Server 2016. Let’s see if we can use OPENJSON to grab publically accessible abstracts from the bags of JSON formatted API’s beyond the internet. Let’s actualize the sample Blockchain database with the btc.Blocks table.
In adjustment to ability the API, we charge to accredit Ole Automation to accessible up the sp_OA arrangement stored procedures.
From there we will actualize two functions. The aboriginal action will acquiesce you to access the block acme of BlockChain.info’s API. To see the abstracts in your browser, you can bang on this link: https://blockchain.info/block-height/0?format=json. The block acme that will cull is block 0, Satoshi’s alpha block. You can change the 0 in the URL to cull any block up to the accepted block acme (a little over 400,000 blocks).
Unfortunately BlockChain.info food the aboriginal UNIX timestamp in the blockXXX.dat abstracts files from the chain. In adjustment to catechumen this to SQL Server datetime, the calligraphy beneath will add and a additional action (btc.fn_UNIXConvertToDateTime) for the conversion.
Now lets alarm the btc.fn_GetBlockFromAPI action to grab the JSON abstracts and admit into the @Block acting table. From there we will admit the @Block abstracts into the btc.Blocks table IF (SELECT MainChain FROM @BlcokTemp) = 1. These are capital alternation blocks (not orphaned) and we will additionally catechumen the awful UNIX timestamp.
Aftereffect set from the INSERT statement:
Of advance you can add a bend to cull rows sequentially, but some API providers are acute about their load. If the API provider is hit too adamantine they may ban your IP, unless you amplitude out your API calls or assurance up for and API Code to bypass limits.
Now that you apperceive how to cull abstracts from an API natively, you can chase for about accessible abstracts from the apple better API directory. This apparatus should be abundant for abstracts warehousing or advertisement needs to analyze accessible abstracts with your clandestine date to see how they benchmark.
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