“ Azure移动服务”和“ Azure应用程序服务”之间的SQL结果不同

Question

I got two different results when running the same SQL statements between Azure Mobile Service(the old service) and Azure App Service(the new service)

The SQL statement is:

SELECT ROW_NUMBER() OVER(ORDER BY score_tot DESC) AS row, score_tot FROM Player

When i run it as an old Azure Mobile Service with the request.service.mssql.query() function i got a json result looking like this:

[ { row: 1 , score_tot: 45674 },

{ row: 2 , score_tot: 21234 }]

but when i run the same SQL statement with the new Azure App Service using the request.azureMobile.data.execute(SQL) function i got this:

[ { row: '1' , score_tot: 45674 },

{ row: '2' , score_tot: 21234 }]

the App Service returns the row columns as a string/text and not as a number as it does in mobile service.

Why is there a difference between these two results and what can i do to get the row columns as numbers in app service? Shouldn't the app service return same results for same SQL statement as the old service?

/T

Answer 1

Per my experience, Azure Mobile Apps SDK for node.js uses node-mssql npm package as SQL Server driver. Following are my screenshot of testing, it seems that node-mssql lets ROW_NUMBER() function returns varchar value instead of int.

As a workaround, you could try to use the SQL below:

SELECT CONVERT(INT, ROW_NUMBER() OVER(ORDER BY score_tot DESC)) AS row, score_tot FROM Player