CreateQuery test_string (children 3)
 Identifier test_string
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration s1 (children 1)
    DataType String
   ColumnDeclaration s2 (children 1)
    DataType String
   ColumnDeclaration s3 (children 1)
    DataType FixedString (children 1)
     ExpressionList (children 1)
      Literal UInt64_10
   ColumnDeclaration s4 (children 1)
    DataType FixedString (children 1)
     ExpressionList (children 1)
      Literal UInt64_10
 Storage definition (children 1)
  Function Memory