ALTER TABLE

Diagram(
  Stack(
    Sequence("ALTER", "TABLE", "table-name"),
    Choice(
      0,
      Sequence("RENAME", "TO", "new-table-name"),
      Sequence("ADD", "FIELD", Link("field-definition"))
    )
  )
);

Diagram(
  Sequence(Link("field-path", "/docs/essentials/expressions/#field-path")),
  OptionalSequence("type-name", OneOrMore(Link("field-constraint")))
);

Diagram(
  Choice(
    0,
    Sequence("PRIMARY", "KEY"),
    Sequence("UNIQUE"),
    Sequence("NOT", "NULL"),
    Sequence(
      "DEFAULT",
      Choice(
        0,
        Sequence("(", Link("expr", "/docs/essentials/expressions"), ")"),
        Sequence(Link("expr", "/docs/essentials/expressions"))
      )
    )
  )
);