flds text not null, -- the values of the fields in this note. separated by 0x1f (31) character. -- For example, contains: <question>\x1f<answer>. sfld integer not null, -- sort field: used for quick sorting and duplicate check -- The value of the field having the index 'sortf' as defined by the model sfld应该是flds的第一个部分(去除了html符号)