-type command() ::
          {raw, unicode:chardata()} |
          {id, ident()} |
          {list, expr_list()} |
          {predicate, expr_list()} |
          {clause, Start :: sql(), End :: sql(), expr()} |
          {param, term()} |
          {bind, term()} |
          {bind_list, [term()]}.

-type context() :: map() | list() | tuple() | undefined.

-type expr() ::
          ignored() |
          atom() |
          string() |
          unicode:chardata() |
          char() |
          command() |
          shorthand() |
          expr_list().

-type expr_list() :: [expr()].

-type ident() :: [ident_part()].

-type ident_part() :: atom() | unicode:chardata() | char() | ignored().

-type ignored() :: [] | <<>> | undefined.

-type option() :: {token, char()} | {convert_fn, esql_build:convert_fn()} | {index, non_neg_integer()}.

-type options() :: [option()].

-type params() :: [term()].

-type shorthand() :: {[term()]} | {term()}.

-type sql() :: unicode:chardata().