CreateQuery 03164_multi_key (children 3)
 Identifier 03164_multi_key
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration c1 (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt32
   ColumnDeclaration c2 (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType UInt32
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier c1
    Identifier c2
  Set
