notnull          131183 ext/sqlite3/libsqlite/sqlite3.c   int notnull = 0;
notnull          131243 ext/sqlite3/libsqlite/sqlite3.c     notnull = pCol->notNull!=0;
notnull          131263 ext/sqlite3/libsqlite/sqlite3.c   if( pNotNull ) *pNotNull = notnull;