- description: Create a computed field get_articles to author table
  url: /v1/query
  status: 200
  query:
    type: add_computed_field
    args:
      table: author
      name: get_articles
      definition:
        function: fetch_articles
        table_argument: author_row
  response:
    message: success

- description: Try to alter the fetch_articles function name
  url: /v1/query
  status: 400
  query:
    type: run_sql
    args:
      sql: |
        ALTER FUNCTION fetch_articles(text, author) RENAME TO fetch_articles_renamed
  response:
    path: $.args
    error: 'cannot drop due to the following dependent objects : computed field author.get_articles
      in source "default"'
    code: dependency-error
- description: Try to alter the fetch_articles function to VOLATILE
  url: /v1/query
  status: 400
  query:
    type: run_sql
    args:
      sql: |
        ALTER FUNCTION fetch_articles(text, author) VOLATILE
  response:
    path: $.args
    error: The type of function "fetch_articles" associated with computed field "get_articles"
      of table "author" is being altered to "VOLATILE"
    code: not-supported

- description: Try to create a new function with name fetch_articles (overloading)
  url: /v1/query
  status: 400
  query:
    type: run_sql
    args:
      sql: |
        CREATE OR REPLACE FUNCTION fetch_articles(search text, author_row author, integer)
        RETURNS SETOF article AS $$
          SELECT *
          FROM article
          WHERE
            ( title ilike ('%' || search || '%')
              OR content ilike ('%' || search || '%')
            ) AND author_id = author_row.id
          LIMIT $3
        $$ LANGUAGE sql STABLE;
  response:
    path: $.args
    error: The function "fetch_articles" associated with computed field"get_articles"
      of table "author" is being overloaded
    code: not-supported

- description: Drop the function fetch_articles and create a new function with the
    same name
  url: /v1/query
  status: 400
  query:
    type: run_sql
    args:
      sql: |
        DROP FUNCTION fetch_articles(text, author);
        CREATE FUNCTION fetch_articles(search text, author_row author, integer)
        RETURNS SETOF article AS $$
          SELECT *
          FROM article
          WHERE
            ( title ilike ('%' || search || '%')
              OR content ilike ('%' || search || '%')
            ) AND author_id = author_row.id
          LIMIT $3
        $$ LANGUAGE sql STABLE;
  response:
    path: $.args
    error: 'cannot drop due to the following dependent objects : computed field author.get_articles
      in source "default"'
    code: dependency-error
- description: Safely alter the definition of function fetch_articles
  url: /v1/query
  status: 200
  query:
    type: run_sql
    args:
      sql: |
        CREATE OR REPLACE FUNCTION fetch_articles(search text, author_row author)
        RETURNS SETOF article AS $$
          SELECT *
          FROM article
          WHERE
            content ilike ('%' || search || '%')
            AND author_id = author_row.id
        $$ LANGUAGE sql STABLE;
  response:
    result_type: CommandOk
    result:

- description: Drop computed field get_articles from author table
  url: /v1/query
  status: 200
  query:
    type: drop_computed_field
    args:
      table: author
      name: get_articles
  response:
    message: success