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why is there an index range scan on max() query?

https://www.generacodice.com/en/articolo/3253121/why-is-there-an-index-range-scan-on-max-query
  oracle  -  max  -  index  -  execution-plan
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Postgres index scan on large table taking a long time

https://www.generacodice.com/en/articolo/3252209/postgres-index-scan-on-large-table-taking-a-long-time
  postgresql  -  query-performance  -  index  -  postgresql-performance  -  postgresql-10
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Should I drop a btree index on a column after adding a unique constraint?

https://www.generacodice.com/en/articolo/3249343/should-i-drop-a-btree-index-on-a-column-after-adding-a-unique-constraint
  postgresql  -  unique-constraint  -  index
dba.stackexchange dba.stackexchange

Does a huge key length value for a mulibyte column affect the index performance?

https://www.generacodice.com/en/articolo/3248923/does-a-huge-key-length-value-for-a-mulibyte-column-affect-the-index-performance
  mysql  -  performance  -  encoding  -  explain  -  index
dba.stackexchange dba.stackexchange

Is a Non-Clustered index needed when referencing a small table with a Foreign Key

https://www.generacodice.com/en/articolo/3247348/is-a-non-clustered-index-needed-when-referencing-a-small-table-with-a-foreign-key
  sql-server  -  clustered-index  -  index  -  foreign-key  -  nonclustered-index
dba.stackexchange dba.stackexchange

PostgreSQL B-tree, good monotonic values?

https://www.generacodice.com/en/articolo/3245784/postgresql-b-tree-good-monotonic-values
  postgresql  -  index  -  btree
dba.stackexchange dba.stackexchange

SQL Server Execution Plans and Index Drops

https://www.generacodice.com/en/articolo/3245702/sql-server-execution-plans-and-index-drops
  sql-server  -  index  -  execution-plan
dba.stackexchange dba.stackexchange

Why does BETWEEN use a btree index but “element is contained by” range operator (<@) does not? [duplicate]

https://www.generacodice.com/en/articolo/3244601/why-does-between-use-a-btree-index-but-element-is-contained-by-range-operator-does-not-duplicate
  postgresql  -  index  -  execution-plan
dba.stackexchange dba.stackexchange

MySQL table proper indexes for performance optimization

https://www.generacodice.com/en/articolo/3244113/mysql-table-proper-indexes-for-performance-optimization
  mysql  -  index
dba.stackexchange dba.stackexchange

Are indexes need for parts of primary key?

https://www.generacodice.com/en/articolo/3243346/are-indexes-need-for-parts-of-primary-key
  postgresql  -  primary-key  -  index
dba.stackexchange dba.stackexchange
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