Today I Learned

hashrocket A Hashrocket project

Conditional unique index with Ecto

I was going to create a conditional index using raw sql like this: 

execute("""
create unique index posts_name_index on posts (name) where deleted_at is null;
""")

But then I learned that you can use the where option with create unique_index: 

create unique_index(:posts, [:name], where: "deleted_at is null")
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