### Getting one recode from a has many relation
addSelect(['value_name' => Model::whereColumn('a','table.b')->take(1)])



### Dynamic Relationships Using Subqueries
The relation column can be added using a addSelect

### Calculate Totals Using Conditional Aggregates
case exists

### Optimize Circular Relationships
Manual set relation to the model instead of loading it again

### Getting LIKE to use an Index
Dont use wildcards on both sides

### Use Unions to Run Queries Independently
Where in
	derived table
		find users by x
			union 
		find users by y