DuckDB multidimensional array types fail to parse

[cpcloud]

In [6]: import sqlglot as sg

In [7]: sg.__version__
Out[7]: '10.5.10'

In [8]: sg.parse_one("select cast(x as bigint[][])", read="duckdb")
...
ParseError: Expecting ). Line 1, Col: 26.
  select cast(x as bigint[][])

[tobymao]

is this is a matrix ?

[tobymao]

is it equivalent to array[array[bigint]] ?

[cpcloud]

It's not a matrix, it's how duckdb spells the array type: int[] -> array<int>, int[][] -> array<array<int>> map(string, int)[] -> array<map<string, int>> etc