SQLITE_OPEN_MAIN_DB  730 ext/sqlite3/libsqlite/sqlite3.c #define SQLITE_OPEN_MAIN_DB          0x00000100  /* VFS only */
SQLITE_OPEN_MAIN_DB  523 ext/sqlite3/libsqlite/sqlite3.h #define SQLITE_OPEN_MAIN_DB          0x00000100  /* VFS only */