CreateQuery versioned_collapsing_merge_tree (children 3)
 Identifier versioned_collapsing_merge_tree
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration key (children 1)
    DataType UInt32
   ColumnDeclaration sign (children 1)
    DataType Int8
   ColumnDeclaration version (children 1)
    DataType Int32
   ColumnDeclaration date (children 1)
    DataType Datetime
 Storage definition (children 3)
  Function VersionedCollapsingMergeTree (children 1)
   ExpressionList (children 2)
    Identifier sign
    Identifier version
  Identifier date
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier key
    Identifier version
