github.com/matrixorigin/matrixone@v1.2.0/test/distributed/resources/external_table_file/ex_table_null.csv (about)

     1  null,null,null,null,null,null,null
     2  100,10.34,你好,aaa,2011-10-10,0
     3  10,1.34,你,aa,2011-10-11,1