查询条件关键字: = != > < >= <= is not is not in in 查询 key = Em-1 key != Em-1 created >= now() like查询(不需要%) summary ~ 'welcome'
查询条件关键字: = != > < >= <= is not is not in in 查询 key = Em-1 key != Em-1 created >= now() like查询(不需要%) summary ~ 'welcome'
道可道,非常道;名可名,非常名。 无名,天地之始,有名,万物之母。 故常无欲,以观其妙,常有欲,以观其徼。 此两者,同出而异名,同谓之玄,玄之又玄,众妙之门。