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New posts in query-performance
SQL Joins vs Subquery - performance difference
Nov 01, 2025
sql
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What is the most performant way to query Process Performance Counters?
Oct 31, 2025
c#
windows
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Reuse mysql Subquery in InnerJoin
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mysql
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Understanding rows_examined_per_scan and rows_produced_per_join
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Postgres `gin_trgm_ops` index not being used
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Oracle "Total" plan cost is really less than some of it's elements
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oracle-database
query-performance
SQL to get records with the same column A, but different B
Feb 19, 2023
sql
postgresql
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Why does a slight change in the search term slow down the query so much?
Dec 27, 2022
performance
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ROW_NUMBER() OVER PARTITION optimization
Dec 26, 2022
tsql
sql-server-2012
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Increase Ms Access Insert Performance
Dec 17, 2022
sql
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CPU Time vs Elapsed Time in T-SQL [closed]
Nov 12, 2022
sql-server
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GroupAggregate for Subquery in Redshift/PostgreSQL
Nov 12, 2022
sql
query-optimization
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Querying on Firebase Database with large data set is very very slow
Oct 30, 2022
android
database
firebase
firebase-realtime-database
query-performance
Why assigning count of a query to a variable performed better than checking it directly?
Oct 21, 2022
sql
sql-server
tsql
sql-server-2008-r2
query-performance
DocumentDB PartitionKey and performance
Oct 18, 2022
azure
azure-cosmosdb
query-performance
Does PostgreSQL implement multi-table indexes?
Oct 17, 2022
sql
postgresql
indexing
query-performance
multi-table
Indexing VARCHAR in MySQL
Nov 02, 2022
mysql
indexing
query-performance
sqldatatypes
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