Obsidian-Vault/Career/Resources/Laracast/Eloquent Performance Patterns.md

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