Difference between natural join and inner join
76298
What is the difference between Left, Right, Outer and Inner Joins?
47701
Why is string concatenation faster than array join?
120506
Performance/efficiency of 2 SELECT statements vs UNION vs anything else in MySQL-PHP
83110
JOIN versus EXISTS performance
33417
Tune a simple inner join query
91276
difference between dot product and inner product
80282
count(*) vs count(column-name) - which is more correct?
135857
Condition within JOIN or WHERE
17013
Difference between different types of SQL?
156303
Performing Inner Join for Multiple Columns in the Same Table
55290
join syntax / style performance consideration
84051
Simplest way to do a recursive self-join?
115199
In what order are MySQL JOINs evaluated?
13075
Entityframework Join using join method and lambdas
150907
Notation and the name choice for meet and join (in order theory)
109082
What is the meaning of the prefix N in T-SQL statements and when should I use it?
22121
What is the difference between varchar and nvarchar?