CreateQuery events (children 3)
 Identifier events
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration key (children 1)
    DataType Int32
   ColumnDeclaration begin (children 1)
    DataType Float64
   ColumnDeclaration value (children 1)
    DataType Int32
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier key
    Identifier begin
