supabase/studio/data/database/database-query-constants.ts

// https://www.postgresql.org/docs/current/catalog-pg-constraint.html

export enum FOREIGN_KEY_DELETION_ACTION {
  NO_ACTION = 'a',
  RESTRICT = 'r',
  CASCADE = 'c',
  SET_NULL = 'n',
  SET_DEFAULT = 'd',
}

export enum CONSTRAINT_TYPE {
  CHECK_CONSTRAINT = 'c',
  FOREIGN_KEY_CONSTRAINT = 'f',
  PRIMARY_KEY_CONSTRAINT = 'p',
  UNIQUE_CONSTRAINT = 'u',
  CONSTRAINT_TRIGGER = 't',
  EXCLUSION_CONSTRAINT = 'x',
}