CreateQuery t_delete_skip_index (children 3)
 Identifier t_delete_skip_index
 Columns definition (children 2)
  ExpressionList (children 2)
   ColumnDeclaration x (children 1)
    DataType UInt32
   ColumnDeclaration y (children 1)
    DataType String
  ExpressionList (children 1)
   Index (children 2)
    Identifier y
    Function minmax (children 1)
     ExpressionList
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
  Set
