which way is better performance (select nested tables or join)?
7675
Explicit vs implicit SQL joins
83110
JOIN versus EXISTS performance
55895
Which one is better : Loop with SOQL or create a List then Loop?
97261
Are nested transactions allowed in MySQL?
64176
MySQL - Selecting data from multiple tables all with same structure but different data
123813
A better way to do nested lists
120506
Performance/efficiency of 2 SELECT statements vs UNION vs anything else in MySQL-PHP
117531
Best practice between using LEFT JOIN or NOT EXISTS
110786
T-SQL: Selecting rows to delete via joins
138361
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
129749
How slow is Python's string concatenation vs. str.join?
86609
Is a view faster than a simple query?
22025
Which is better for long term database scalability: adding columns or having key/value store
65713
Update by iterating table in batches faster than whole table in PostgreSQL
133214
Can moving tables to another MySQL database help performance?
7488
Inner join vs Where
10221
Sql insert query performance