CreateQuery mem3 (children 3)
 Identifier mem3
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration k (children 1)
    DataType UInt64
   ColumnDeclaration v (children 1)
    DataType String
 Storage definition (children 2)
  Function Join (children 1)
   ExpressionList (children 3)
    Identifier ALL
    Identifier FULL
    Identifier k
  Set
