Tag relational-division - Это страница 15 - GeneraCodice

Find groups with exactly one value: COUNT(DISTINCT x) = 1 vs MIN(x) = MAX(x)

https://www.generacodice.com/ru/articolo/2870461/find-groups-with-exactly-one-value-count-distinct-x-1-vs-min-x-max-x
  performance  -  sql-server  -  query-performance  -  relational-division
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How to select specific items from table A which appear with all items of some column in table B?

https://www.generacodice.com/ru/articolo/2827818/how-to-select-specific-items-from-table-a-which-appear-with-all-items-of-some-column-in-table-b
  postgresql  -  subquery  -  relational-division  -  query
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How to select students that failed at least at all courses that student with id = 1 failed?

https://www.generacodice.com/ru/articolo/2775448/how-to-select-students-that-failed-at-least-at-all-courses-that-student-with-id-1-failed
  oracle  -  join  -  relational-division  -  minus
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Names of courses where *every* enrolled student is a participant

https://www.generacodice.com/ru/articolo/2772526/names-of-courses-where-every-enrolled-student-is-a-participant
  sql-server  -  sql-server-2012  -  relational-division  -  t-sql
dba.stackexchange dba.stackexchange

SELECT rows based on indefinite number of filters

https://www.generacodice.com/ru/articolo/2764415/select-rows-based-on-indefinite-number-of-filters
  postgresql  -  dynamic-sql  -  relational-division
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Finding Records that Have Same Options

https://www.generacodice.com/ru/articolo/2753996/finding-records-that-have-same-options
  mysql  -  relational-division
dba.stackexchange dba.stackexchange

Arbitrary queries on n:m relationship, including “all” and “any”

https://www.generacodice.com/ru/articolo/2647515/arbitrary-queries-on-n-m-relationship-including-all-and-any
  performance  -  postgresql  -  relational-division  -  postgresql-performance  -  postgresql-9.6  -  postgresql-10
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PostgreSQL find groups with same members

https://www.generacodice.com/ru/articolo/2641291/postgresql-find-groups-with-same-members
  postgresql  -  relational-division
dba.stackexchange dba.stackexchange

A better way to write this query?

https://www.generacodice.com/ru/articolo/2640121/a-better-way-to-write-this-query
  performance  -  postgresql  -  subquery  -  relational-division  -  postgresql-performance
dba.stackexchange dba.stackexchange

SQL query to display names of customers who have purchased all the DVD

https://www.generacodice.com/ru/articolo/2628218/sql-query-to-display-names-of-customers-who-have-purchased-all-the-dvd
  sql-server  -  relational-division
dba.stackexchange dba.stackexchange
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