How to convert “AS” to relational algebra











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-1
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If I have a simple query:



SELECT COUNT(*) AS num 

FROM Person 

GROUP BY ID;


How would I convert this to relational algebra?






sql relational-algebra







share|improve this question




















  • 2




    What do you mean relational algebra?
    – D-Shih
    22 hours ago










  • I think, You may refer Aggregation title of this link : en.wikipedia.org/wiki/Relational_algebra
    – Barbaros Özhan
    22 hours ago










  • Hi. There are many relational algebras--Give your texbook name & edition & where in it or define what "relation" means & exactly how the operators work. Define "convert"--Same result? Same structure also? See How to Ask, the downvote arrow mouseover text & hits googling 'stackexchange homework'--What have you found? What can you do? What do you suspect? PS Relation algebra is a programming language. Is there anything more we need to know from a Minimal, Complete, and Verifiable example?
    – philipxy
    20 hours ago








  • 1




    What does your title have to do with the body of your post & your question?
    – philipxy
    20 hours ago















up vote
-1
down vote

favorite












If I have a simple query:



SELECT COUNT(*) AS num 

FROM Person 

GROUP BY ID;


How would I convert this to relational algebra?






sql relational-algebra







share|improve this question




















  • 2




    What do you mean relational algebra?
    – D-Shih
    22 hours ago










  • I think, You may refer Aggregation title of this link : en.wikipedia.org/wiki/Relational_algebra
    – Barbaros Özhan
    22 hours ago










  • Hi. There are many relational algebras--Give your texbook name & edition & where in it or define what "relation" means & exactly how the operators work. Define "convert"--Same result? Same structure also? See How to Ask, the downvote arrow mouseover text & hits googling 'stackexchange homework'--What have you found? What can you do? What do you suspect? PS Relation algebra is a programming language. Is there anything more we need to know from a Minimal, Complete, and Verifiable example?
    – philipxy
    20 hours ago








  • 1




    What does your title have to do with the body of your post & your question?
    – philipxy
    20 hours ago













up vote
-1
down vote

favorite









up vote
-1
down vote

favorite











If I have a simple query:



SELECT COUNT(*) AS num 

FROM Person 

GROUP BY ID;


How would I convert this to relational algebra?






sql relational-algebra







share|improve this question















If I have a simple query:



SELECT COUNT(*) AS num 

FROM Person 

GROUP BY ID;


How would I convert this to relational algebra?






sql relational-algebra




sql relational-algebra






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 22 hours ago









D-Shih

23.2k61331




23.2k61331










asked 22 hours ago









Yushey

293




293








  • 2




    What do you mean relational algebra?
    – D-Shih
    22 hours ago










  • I think, You may refer Aggregation title of this link : en.wikipedia.org/wiki/Relational_algebra
    – Barbaros Özhan
    22 hours ago










  • Hi. There are many relational algebras--Give your texbook name & edition & where in it or define what "relation" means & exactly how the operators work. Define "convert"--Same result? Same structure also? See How to Ask, the downvote arrow mouseover text & hits googling 'stackexchange homework'--What have you found? What can you do? What do you suspect? PS Relation algebra is a programming language. Is there anything more we need to know from a Minimal, Complete, and Verifiable example?
    – philipxy
    20 hours ago








  • 1




    What does your title have to do with the body of your post & your question?
    – philipxy
    20 hours ago














  • 2




    What do you mean relational algebra?
    – D-Shih
    22 hours ago










  • I think, You may refer Aggregation title of this link : en.wikipedia.org/wiki/Relational_algebra
    – Barbaros Özhan
    22 hours ago










  • Hi. There are many relational algebras--Give your texbook name & edition & where in it or define what "relation" means & exactly how the operators work. Define "convert"--Same result? Same structure also? See How to Ask, the downvote arrow mouseover text & hits googling 'stackexchange homework'--What have you found? What can you do? What do you suspect? PS Relation algebra is a programming language. Is there anything more we need to know from a Minimal, Complete, and Verifiable example?
    – philipxy
    20 hours ago








  • 1




    What does your title have to do with the body of your post & your question?
    – philipxy
    20 hours ago








2




2




What do you mean relational algebra?
– D-Shih
22 hours ago




What do you mean relational algebra?
– D-Shih
22 hours ago












I think, You may refer Aggregation title of this link : en.wikipedia.org/wiki/Relational_algebra
– Barbaros Özhan
22 hours ago




I think, You may refer Aggregation title of this link : en.wikipedia.org/wiki/Relational_algebra
– Barbaros Özhan
22 hours ago












Hi. There are many relational algebras--Give your texbook name & edition & where in it or define what "relation" means & exactly how the operators work. Define "convert"--Same result? Same structure also? See How to Ask, the downvote arrow mouseover text & hits googling 'stackexchange homework'--What have you found? What can you do? What do you suspect? PS Relation algebra is a programming language. Is there anything more we need to know from a Minimal, Complete, and Verifiable example?
– philipxy
20 hours ago






Hi. There are many relational algebras--Give your texbook name & edition & where in it or define what "relation" means & exactly how the operators work. Define "convert"--Same result? Same structure also? See How to Ask, the downvote arrow mouseover text & hits googling 'stackexchange homework'--What have you found? What can you do? What do you suspect? PS Relation algebra is a programming language. Is there anything more we need to know from a Minimal, Complete, and Verifiable example?
– philipxy
20 hours ago






1




1




What does your title have to do with the body of your post & your question?
– philipxy
20 hours ago




What does your title have to do with the body of your post & your question?
– philipxy
20 hours ago

















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