📑 Schema & Types

• Object Types and Fields: type
• Query, Mutaiton Types: query, mutation
• Scalar Types
• Enumeration Types: enum
• Lists and Non-Null
• Interfaces
• Union Types: union
• Input Types: input

📑 Operation

• operation types: query, mutation, subsccription
• operation names: optional

📑 指令 directives

• @include(if: Boolean)
• @skop(if: Boolean)

query Hero($episode: Episode, $withFriends: Boolean!) {
	hero(episode: $episode) {
		name
		friends @include(if: $withFriends) {
			name
		}
	}
}

📑 fragments