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New posts in query-optimization

2gb table with 10 million rows, late pagination select is slow

How do I limit the number of results for a specific variable in a SPARQL query?

query-optimization sparql

What is an automatic covering index?

bson.D vs bson.M for find queries

How to optimize query with many joins?

MySQL: comparison of integer value and string field with index

Where might I find a method to convert an arbitrary boolean expression into conjunctive or disjunctive normal form?

Oracle not using index when joining

are there any Query Optimization Tools for SQL Server? [closed]

T-SQL query performance puzzle: Why does using a variable make a difference?

MySQL, delete and index hint

Alternative to COUNT for innodb to prevent table scan?

Sum for multiple date ranges in a single query?

Higher cardinality column first in an index when involving a range?

How to describe performance issue in relational database?

bitwise mask vs IN() efficiency in sqlite?

Why are UNION queries so slow in MySQL?

Change varchar to boolean in PostgreSQL

Index scan backward vs index scan

SQL question from Joel Spolsky article

sql query-optimization