Tag execution-plan - Это страница 7 - GeneraCodice

Statistics Update Time is missing in Actual execution plan

https://www.generacodice.com/ru/articolo/3184779/statistics-update-time-is-missing-in-actual-execution-plan
  sql-server  -  statistics  -  execution-plan
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Query tuning update with hash flow distinct operator

https://www.generacodice.com/ru/articolo/3184208/query-tuning-update-with-hash-flow-distinct-operator
  sql-server  -  query-performance  -  execution-plan  -  update  -  sql-server-2014
dba.stackexchange dba.stackexchange

How are database views executed?

https://www.generacodice.com/ru/articolo/3179286/how-are-database-views-executed
  postgresql  -  view  -  execution-plan
dba.stackexchange dba.stackexchange

Postgres not using index in citext column

https://www.generacodice.com/ru/articolo/3179274/postgres-not-using-index-in-citext-column
  postgresql  -  index  -  execution-plan
dba.stackexchange dba.stackexchange

Postgres sometimes uses sequential scan instead of an index only scan for data that doesn't exist

https://www.generacodice.com/ru/articolo/3179179/postgres-sometimes-uses-sequential-scan-instead-of-an-index-only-scan-for-data-that-doesn-t-exist
  postgresql  -  prepared-statement  -  query-performance  -  execution-plan
dba.stackexchange dba.stackexchange

PostgreSQL incorrectly using primary key index for min/max query

https://www.generacodice.com/ru/articolo/3167629/postgresql-incorrectly-using-primary-key-index-for-min-max-query
  postgresql  -  query-performance  -  index  -  execution-plan  -  postgresql-performance
dba.stackexchange dba.stackexchange

Bad estimates when sorting, good estimates without sort

https://www.generacodice.com/ru/articolo/3166256/bad-estimates-when-sorting-good-estimates-without-sort
  sql-server-2016  -  query-performance  -  execution-plan  -  cardinality-estimates
dba.stackexchange dba.stackexchange

SQL Server - Prevent Clustered Index Scan on a specific table

https://www.generacodice.com/ru/articolo/3161788/sql-server-prevent-clustered-index-scan-on-a-specific-table
  sql-server  -  sql-server-2016  -  query-performance  -  execution-plan
dba.stackexchange dba.stackexchange

Is there anything wrong with splitting a complicated view into many small ones?

https://www.generacodice.com/ru/articolo/3159343/is-there-anything-wrong-with-splitting-a-complicated-view-into-many-small-ones
  postgresql  -  view  -  execution-plan  -  postgresql-performance
dba.stackexchange dba.stackexchange

can't find column stats for newly created table

https://www.generacodice.com/ru/articolo/3158835/can-t-find-column-stats-for-newly-created-table
  sql-server  -  statistics  -  recompile  -  execution-plan  -  sql-server-2014
dba.stackexchange dba.stackexchange
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