CreateQuery versioned_collapsing (children 3)
 Identifier versioned_collapsing
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType Int64
   ColumnDeclaration version (children 1)
    DataType UInt8
   ColumnDeclaration sign (children 1)
    DataType Int8
 Storage definition (children 2)
  Function VersionedCollapsingMergeTree (children 1)
   ExpressionList (children 2)
    Identifier sign
    Identifier version
  Identifier key
