SQLITE_SYNC_DATAONLY 27735 ext/sqlite3/libsqlite/sqlite3.c   int isDataOnly = (flags&SQLITE_SYNC_DATAONLY);
SQLITE_SYNC_DATAONLY 38098 ext/sqlite3/libsqlite/sqlite3.c       rc = sqlite3OsSync(pPager->jfd, SQLITE_SYNC_DATAONLY|pPager->syncFlags);
SQLITE_SYNC_DATAONLY 40721 ext/sqlite3/libsqlite/sqlite3.c           (pPager->syncFlags==SQLITE_SYNC_FULL?SQLITE_SYNC_DATAONLY:0)