如何在列中选择NULL为空的行

问题描述:

以下声明未正确回复。我想在'ActualDateOfDespatch'列中选择那些为NULL的行。



从txfile中选择orderqty,其中ActualDateOfDespatch = NULL

The following statement is not responding correctly. I want to select those rows that are NULL in the column 'ActualDateOfDespatch'.

select orderqty from txfile where ActualDateOfDespatch=NULL

试试这个:

从txfile中选择orderqty,其中ActualDateOfDespatch为NULL
Try this:
select orderqty from txfile where ActualDateOfDespatch is NULL


select orderqty from txfile where ActualDateOfDespatch Is NULL 



快乐编码!

:)


Happy Coding!
:)


试试这个: -

try this:-
select orderqty from txfile where ActualDateOfDespatch Is NULL