Issues

Sparql query with accept 'Accept: application/sparql-results+json' throws 406 on Max Silicon

#1475

· dwintergruen opened

on Sep 9, 2026

virtodbc.so: a column-wise SQL_C_TYPE_DATE parameter array is stepped by SQLBindParameter's ColumnSize rather than by sizeof(SQL_DATE_STRUCT) — ColumnSize 0 inserts row 0's date into every row, other values insert garbage dates, all with SQL_SUCCESS

#1473

· singhpratech opened

on Aug 29, 2026

virtodbc.so: SQL_C_SBIGINT parameters store 0 and SQL_C_SBIGINT fetches return indicator 0 with the buffer untouched, silently; SQL_C_SLONG parameters are read as 8 bytes regardless of BufferLength

#1472

· singhpratech opened

on Aug 29, 2026

virtodbc.so: Charset=<any value but the exact literal UTF-8> aborts the process inside SQLDriverConnect ("GPF: Dkbox.c:638 Double free", SIGSEGV), including every charset Virtuoso itself lists; Charset=UTF-8 connects but returns wide columns doubly encoded

#1471

· singhpratech opened

on Aug 29, 2026

virtodbc.so (Linux, unixODBC): SQL_C_WCHAR parameters and fetches use 4-byte wchar_t units, not the 2-byte SQLWCHAR the driver manager defines — "hello" stores as "??", "héllo 🚀" as "0", no diagnostic

#1470

· singhpratech opened

on Aug 29, 2026

macOS ODBC driver (Homebrew 7.2.17) is built to iODBC's 4-byte SQLWCHAR, undocumented — process aborts on the first SQL error under unixODBC

#1469

· singhpratech opened

on Aug 25, 2026

Redundant DISTINCT in an IN subquery avoids an expensive execution path

enhancement

#1462

· chen8908917 opened

on Aug 15, 2026

Clarification request: ORDER BY scope in a parenthesized EXCEPT operand

#1456

· chen8908917 opened

on Aug 15, 2026

SQ155 optimized compiler error with JOIN and nested IN subquery

#1452

· chen8908917 opened

on Aug 15, 2026

EXCEPT against a known-empty table is not simplified

enhancement

#1451

· chen8908917 opened

on Aug 15, 2026

Redundant HAVING COUNT(*) > 0 predicate is retained

enhancement

#1450

· chen8908917 opened

on Aug 15, 2026

OR FALSE is not folded and prevents access-predicate use

enhancement

#1449

· chen8908917 opened

on Aug 15, 2026

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All issues

Sparql query with accept 'Accept: application/sparql-results+json' throws 406 on Max Silicon

virtodbc.so: a column-wise SQL_C_TYPE_DATE parameter array is stepped by SQLBindParameter's ColumnSize rather than by sizeof(SQL_DATE_STRUCT) — ColumnSize 0 inserts row 0's date into every row, other values insert garbage dates, all with SQL_SUCCESS

virtodbc.so: SQL_C_SBIGINT parameters store 0 and SQL_C_SBIGINT fetches return indicator 0 with the buffer untouched, silently; SQL_C_SLONG parameters are read as 8 bytes regardless of BufferLength

virtodbc.so: Charset=<any value but the exact literal UTF-8> aborts the process inside SQLDriverConnect ("GPF: Dkbox.c:638 Double free", SIGSEGV), including every charset Virtuoso itself lists; Charset=UTF-8 connects but returns wide columns doubly encoded

virtodbc.so (Linux, unixODBC): SQL_C_WCHAR parameters and fetches use 4-byte wchar_t units, not the 2-byte SQLWCHAR the driver manager defines — "hello" stores as "??", "héllo 🚀" as "0", no diagnostic

macOS ODBC driver (Homebrew 7.2.17) is built to iODBC's 4-byte SQLWCHAR, undocumented — process aborts on the first SQL error under unixODBC

Redundant DISTINCT in an IN subquery avoids an expensive execution path

Clarification request: ORDER BY scope in a parenthesized EXCEPT operand

SQ155 optimized compiler error with JOIN and nested IN subquery

EXCEPT against a known-empty table is not simplified

Redundant HAVING COUNT(*) > 0 predicate is retained

OR FALSE is not folded and prevents access-predicate use

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