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SQL Query Assignment Help for students

Updated: Mar 18, 2021

Database Assignment Help is a most important subject of Computer Science. We provide database experts to design your database and will complete database homework assignment and solutions to the questions related to Query , Sub-query, Join etc. Addition of database assignment help we do RDBMS, DBMS, SQL Query Problems, Database Design,

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Database Assignment examples

1. Do My SQL Query


I'm in need for some SQL queries.

And possibly some database optimizations.

and a quick explanation of the tables:

results: identifies the results for a specific tid (tournament)

matches: gives the result for each tid of the matches disputed. the result (1) indicates if the winner was team1+deckone or (2), team2,decktwo.

The queries i will need are:

a) Select distinct from results the deck and number of times it appears

example expected:

Deck : total ------------ red : 5 Yellow : 2 Blue: 6

b) A select from the table matches that will give the win rates from a specified deck.

meaning, counting all the ocorrences of deck, and times it won, against what. Ignore when deckone = decktwo

example expected:

Deck : wins : loses : total ____________________________ Yellow : 5 : 2 : 7 Blue : 2 : 2 : 4

c) Same as previous querie, except it relates to other decks.

global win = total wins / total plays.

win vs x = wins vs deck x / plays vs deck x

example expected (don't need the % calculated, i can do that, just need to wins and totals).

Deck : global win : win vs Yell : win vs blue : win vs Pink ------------------------------------------------------------- Yell : 50% : - : 20% : 50% : 80% Blue : 40% : 30% : - : 20% : 45% Pink : 90% : 50% : 100% : 70% : -

d) A mix of a) + c) Meaning to include a new collum with: (number of deck)/total.

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