Tag relational-algebra - Esta é a página 31 - GeneraCodice

How to write a relax-join expression without using if-else?

https://www.generacodice.com/pt/articolo/1321766/how-to-write-a-relax-join-expression-without-using-if-else
  sql  -  join  -  relational-algebra
StackOverflow StackOverflow

selecting based on all conditions being met (relational division)

https://www.generacodice.com/pt/articolo/1321048/selecting-based-on-all-conditions-being-met-relational-division
  mysql  -  sql  -  relational-algebra
StackOverflow StackOverflow

In SQL, how can I perform a “subtraction” operation?

https://www.generacodice.com/pt/articolo/1301263/in-sql-how-can-i-perform-a-subtraction-operation
  database  -  sql  -  relational-algebra
StackOverflow StackOverflow

How to find all pizzerias that serve every pizza eaten by people over 30?

https://www.generacodice.com/pt/articolo/1243138/how-to-find-all-pizzerias-that-serve-every-pizza-eaten-by-people-over-30
  relational-algebra  -  relational-division
StackOverflow StackOverflow

Rails3: how to use relational algebra to replace SQL-constructions like NOT and OUTER JOIN

https://www.generacodice.com/pt/articolo/1163217/rails3-how-to-use-relational-algebra-to-replace-sql-constructions-like-not-and-outer-join
  outer-join  -  relational-algebra  -  ruby-on-rails-3  -  arel
StackOverflow StackOverflow

Selecting DISTINCT rows in relational algebra

https://www.generacodice.com/pt/articolo/1152008/selecting-distinct-rows-in-relational-algebra
  relational-algebra
StackOverflow StackOverflow

Smallest set of features that would make relational algebra Turing complete

https://www.generacodice.com/pt/articolo/1127901/smallest-set-of-features-that-would-make-relational-algebra-turing-complete
  relational-algebra  -  computation-models  -  turing-completeness
cs.stackexchange cs.stackexchange

“At least one” clause in Relational Algebra

https://www.generacodice.com/pt/articolo/1123168/at-least-one-clause-in-relational-algebra
  relational-algebra  -  database-theory  -  databases
cs.stackexchange cs.stackexchange

Computing number of block reads given relational algebra statement

https://www.generacodice.com/pt/articolo/1121926/computing-number-of-block-reads-given-relational-algebra-statement
  relational-algebra  -  database-theory  -  databases
cs.stackexchange cs.stackexchange

Origin of theta-joins

https://www.generacodice.com/pt/articolo/1119026/origin-of-theta-joins
  history  -  relational-algebra  -  reference-request
cs.stackexchange cs.stackexchange
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