CreateQuery colors (children 3)
 Identifier colors
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration color_key (children 1)
    DataType UInt64
   ColumnDeclaration color_name (children 1)
    DataType String
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
