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Postgres functions: rpc()

You can call Postgres functions as a "Remote Procedure Call".

That's a fancy way of saying that you can put some logic into your database then call it from anywhere. It's especially useful when the logic rarely changes - like password resets and updates.

create or replace function hello_world() returns text as $$
  select 'Hello world';
$$ language sql;
const { data, error } = await supabase
  .rpc('hello_world')

Parameters​

  • fnrequiredstring

    The function name to call.

  • paramsoptionalundefined | object

    The parameters to pass to the function call.

  • __namedParametersrequiredobject

    No description provided.

      Properties

    • headrequiredboolean

      When set to true, no data will be returned.

    • countrequirednull | exact | planned | estimated

      Count algorithm to use to count rows in a table.

Examples​

Call a Postgres function​

This is an example of invoking a Postgres function with no parameters.

const { data, error } = await supabase
  .rpc('hello_world')

With Parameters​

const { data, error } = await supabase
  .rpc('echo_city', { name: 'The Shire' })

Bulk processing​

You can process large payloads at once using array parameters.

const { data, error } = await postgrest
  .rpc('echo_cities', { names: ['The Shire', 'Mordor'] })

With filters​

Postgres functions that return tables can also be combined with Modifiers and Filters.

const { data, error } = await supabase
  .rpc('echo_all_cities')
  .select('name, population')
  .eq('name', 'The Shire')

With count option​

You can specify a count option to get the row count along with your data. Allowed values for count option are null, exact, planned and estimated.

const { data, error, count } = await supabase
  .rpc('hello_world', {}, { count: 'exact' })