InsertQuery   (children 3)
 Identifier decimal
 ExpressionList (children 3)
  Identifier a
  Identifier b
  Identifier c
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 3)
     Function toDecimal32 (children 1)
      ExpressionList (children 2)
       Function minus (children 1)
        ExpressionList (children 2)
         Identifier number
         Literal UInt64_50
       Literal UInt64_4
     Function divide (children 1)
      ExpressionList (children 2)
       Function toDecimal64 (children 1)
        ExpressionList (children 2)
         Function minus (children 1)
          ExpressionList (children 2)
           Identifier number
           Literal UInt64_50
         Literal UInt64_8
       Literal UInt64_3
     Function divide (children 1)
      ExpressionList (children 2)
       Function toDecimal128 (children 1)
        ExpressionList (children 2)
         Function minus (children 1)
          ExpressionList (children 2)
           Identifier number
           Literal UInt64_50
         Literal UInt64_8
       Literal UInt64_5
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier system.numbers
    Literal UInt64_101