CreateQuery mv_expand_test_table (children 3)
 Identifier mv_expand_test_table
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration a (children 1)
    DataType UInt8
   ColumnDeclaration b (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType String
   ColumnDeclaration c (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Int8
   ColumnDeclaration d (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Int8
 Storage definition (children 1)
  Function Memory