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Cryptocurrency Ethereum Mastering Development

Error: CompileError: InternalCompilerError: Stack too deep, try removing local variables

Hello everyone please kindly help me out. I have researched on the error above associated with this block of code. But please is there a way to revise this code so that i can get all the data of a patient from a single struct. How would you advice I approach this pragma solidity >=0.4.21 […]

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Database Development

How can I optimize and speed up a query [closed]

Below query never completes and runs for over 14 hours: SELECT U.Age, U.CreationDate, U.DisplayName, P.AcceptedAnswerId, P.ClosedDate, p .Title, P.ViewCount, C.CreationDate,C.Score ,C.UserId FROM dbo.Users As U LEFT JOIN dbo.Posts As P on U.id = P.id LEFT JOIN dbo.Comments As C on U.id =C.id WHERE ( U.Location = ‘India’ OR U.Location =’United Kingdom’ ) AND U.LastAccessDate>= ’04/02/2018′ […]

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Database Development

How can i re-write below query better

I am trying to understand better how to improve performance of query written somewhat similar below Yes datatypes and indexes do not match but as a general, i am looking if there is a better way to write query because query similar to below will never complete and runs for over 14 hours a day […]

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Development SQL

Cleaning up SQL query with nested query and inner join

Been trying to reintroduce myself to SQL through some practice questions I’ve developed for myself, but struggling to find a better way of approaching the following problem: playlists playlist_id title 1 Title1 2 Title2 playlist_clips id playlist_id 1 Title1 2 Title2 playlist_tags id playlist_id 1 Title1 2 Title2 I wanted to select all the playlists […]