CreateQuery simple_levenshtein (children 3)
 Identifier simple_levenshtein
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration lhs (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt8
   ColumnDeclaration rhs (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt8
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList