Prestige
A middleware layer for the Presto database
Documentation: hexdocs
Installation
Prestige can be installed by adding prestige
to your list of dependencies in mix.exs
:
def deps do
[
{:prestige, "~> 0.3.2"}
]
end
Running tests
Clone the repo and fetch its dependencies:
$ git clone https://github.com/smartcitiesdata/prestige
$ cd prestige
$ mix deps.get
$ mix test
Example Usage
Adding Data to Presto
Create table:
create_statement = "create table memory.default.monkeys ( id bigint, stuff array(row(name varchar, color varchar)))"
Prestige.execute(create_statement, user: "prestouser") |> Stream.run()
Insert data:
insert_statement = "insert into memory.default.monkeys(id, stuff) values(1, array[row('George','black'), row('James','red')])"
Prestige.execute(insert_statement, user: "prestouser") |> Stream.run()
Select data:
iex> Prestige.execute("select * from memory.default.monkeys", user: "prestouser", by_names: true) |> Prestige.prefetch
[
%{
"id" => 1,
"stuff" => [
%{"color" => "black", "name" => "George"},
%{"color" => "red", "name" => "James"}
]
}
]
License
Released under Apache 2 license.