sql-execution-plan tutorials

How to fix PostgreSQL generic plan estimate for any($1) array parameter?

Sep 22, 2025

LIMIT with ORDER BY makes query slow

Sep 08, 2025

postgresql indexing sql-execution-plan postgresql-performance

Efficient PostgreSQL query on timestamp using index or bitmap index scan?

Sep 05, 2025

sql postgresql indexing sql-execution-plan postgresql-performance

Postgresql huge performance difference when using IN vs NOT IN

Mar 05, 2023

postgresql sql-execution-plan explain

Oracle JOIN operation performance changes when swapping SELECT statements

Feb 17, 2023

sql oracle join sql-execution-plan

Postgresql ignoring index on timestamp column even if query is faster using index

Feb 14, 2023

sql postgresql postgresql-9.3 postgresql-performance sql-execution-plan

How do I know what's behind the `auto_key0` index in MySQL?

Jan 30, 2023

mysql sql-execution-plan explain

Strange problem with SQL Server procedure execution plan

Jan 21, 2023

sql-server sql-server-2005 stored-procedures sql-execution-plan

Does Oracle chose a default execution plan when parsing a prepared statement?

Jan 10, 2023

sql database oracle optimization sql-execution-plan

What is the "filtered" column in MySQL EXPLAIN telling me, and how can I make use of it?

Dec 25, 2022

mysql sql sql-execution-plan explain

Extracting data from SQL Server's XML execution plan

Dec 22, 2022

sql-server xml tsql sql-execution-plan

How accurate is Oracle's EXPLAIN PLAN?

Dec 03, 2022

sql oracle oracle10g sql-execution-plan

Different Execution Plan for the same Stored Procedure

Dec 02, 2022

sql sql-server sql-server-2005 stored-procedures sql-execution-plan

MySQL slow query with join even though EXPLAIN shows good plan

Nov 16, 2022

mysql join performance sql-execution-plan

How to optimize mysql query based on explain. (Type: ALL

Nov 15, 2022

mysql optimization sql-execution-plan

Understanding explain plan through xmltype

Nov 12, 2022

oracle xpath xmltype sql-execution-plan

mysql multi column index not working (as expected)?

Nov 07, 2022

mysql indexing sql-order-by sql-execution-plan compound-index

Oracle equivalent of Postgres EXPLAIN ANALYZE

Nov 05, 2022

sql oracle sql-execution-plan

SQL Error: ORA-01039: insufficient privileges on underlying objects of the view

Nov 03, 2022

database oracle view sql-grant sql-execution-plan

Explain Vs Desc anomalies in mysql

Feb 05, 2023

mysql sql-execution-plan describe

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