SQLite Forum

SQLite3 Array?
The original query is reading a SINGLE STRING, where each character position corresponds to a cell in the sudoku puzzle and contains either a digit (for a known cell) or the full stop character (for an unknown cell).

Replacing full stops with commas does not make a list of values out of the string.

SQLite does not have an ARRAY type, as would be required for the solution to the shortest path problem in the page you referenced.