Oracle 10g slow performance on first query
47917
Why does the same query run faster the second time I run it?
68174
Query is slow in SQL Server 2014, fast in SQL Server 2012
64636
udf vs direct sql performance
130239
Optimise PostgreSQL for fast testing
127553
Why is this MySQL SELECT performing so slowly despite indexing?
89072
Improve INSERT-per-second performance of SQLite
76121
Troubleshooting memory pressure - how to avoid paging out SQL Server?
151841
Improve Query Performance over Large Dataset
37349
Why does my query run fast in Environment A, but slow in Environment B?
9765
Help with :Too many SOQL queries: 101 - How to debug where it's failing
86609
Is a view faster than a simple query?
33417
Tune a simple inner join query
99497
IF EXISTS taking longer than embedded select statement
49911
How can I return 10 of the most recent results in sql?
70454
How to get full query text from performance_schema.threads?
85496
MySql view is very slow. Why?
50494
osm2pgsql Ways importing very slowly in .pbf, much slower than .osm