CreateQuery t_final_collapsing (children 3)
 Identifier t_final_collapsing
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType Int8
   ColumnDeclaration sign (children 1)
    DataType Int8
   ColumnDeclaration version (children 1)
    DataType UInt64
 Storage definition (children 2)
  Function VersionedCollapsingMergeTree (children 1)
   ExpressionList (children 2)
    Identifier sign
    Identifier version
  Identifier key
