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New posts in query-optimization
I want to optimize a stored procedure that uses IN clause and a regex_str function. I am not sure that how I should optimize it more?
Aug 02, 2026
regex
performance
oracle-database
plsql
query-optimization
AWS RDS Postgres performance problem by MOVE ALL IN "query-cursor_1" automatic sql instruction
Aug 02, 2026
postgresql
query-optimization
amazon-rds
database-performance
How to optimize datetime comparisons in mysql in where clause
Jul 31, 2026
mysql
sql
optimization
query-optimization
Optimize SQL Server Aggregation Query
Jul 26, 2026
sql
sql-server
query-optimization
In Oracle, PARALLEL is extensively used. What are the differences among PARALLEL, PARALLEL(8), PARALLEL(a,8)?
Jul 24, 2026
oracle-database
oracle11g
parallel-processing
query-optimization
How to optimise below sql query?
Jul 23, 2026
mysql
sql
database
query-optimization
Optimize MySQL query with dependent sub-query
Jul 22, 2026
mysql
optimization
query-optimization
mysql-dependent-subquery
How to speed up a query with nested loops
Jul 20, 2026
sql-server
sql-server-2008-r2
query-optimization
Why are bad row estimates slow in Postgres?
Jul 20, 2026
postgresql
query-optimization
cost-based-optimizer
Paginate count(*) query issue
Jul 16, 2026
laravel
optimization
eloquent
query-optimization
laravel-8
Using OR on WHERE statement in MySql causes slow excecution
Jul 16, 2026
mysql
query-optimization
Optimizing MySql query (IN) to avoid using “Using filesort”
Jul 16, 2026
mysql
performance
optimization
query-optimization
filesort
Oracle SQL when to use the full hint
Jul 15, 2026
sql
oracle-database
query-optimization
Optimizing an ActiveRecord query
Jul 15, 2026
sql
ruby-on-rails
postgresql
activerecord
query-optimization
How can I speed up this count + group by query over a large table?
Jul 15, 2026
sql
postgresql
query-optimization
segment-analytics
SQL Server paging query selecting spatial geometry data with where clause very slow compared to without
Jul 13, 2026
sql-server
performance
geometry
query-optimization
spatial
Spark DataFrame / Dataset groupBy optimization via bucketBy
Jul 05, 2026
apache-spark
group-by
query-optimization
parquet
bucket
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