exprTableColumn  98834 ext/sqlite3/libsqlite/sqlite3.c       pRight = exprTableColumn(db, pTab, pSrc->a[0].iCursor, -1);
exprTableColumn  98843 ext/sqlite3/libsqlite/sqlite3.c         pRight = exprTableColumn(db, pTab, pSrc->a[0].iCursor, iCol);