CreateQuery tab_00612 (children 3)
 Identifier tab_00612
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType UInt64
   ColumnDeclaration arr (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt64
 Storage definition (children 2)
  Function MergeTree
  Identifier key