InsertQuery   (children 2)
 Identifier t_text_index_drop_caches
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function concat (children 1)
      ExpressionList (children 3)
       Literal \'tkn\'
       Function toString (children 1)
        ExpressionList (children 1)
         Identifier number
       Literal \'nkt\'
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_200000
