CreateQuery t_final_collapsing (children 3)
 Identifier t_final_collapsing
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType Int8
   ColumnDeclaration sign (children 1)
    DataType Int8
 Storage definition (children 2)
  Function CollapsingMergeTree (children 1)
   ExpressionList (children 1)
    Identifier sign
  Identifier key
