On 09/07/16 14:13, Hal.sz S.ndor wrote:
2016/07/08 09:15 ... Johan De Meersman:
You will have to repeat all the column names - no
wildcards in where clause fieldnames - but the clause
you're looking for is WHERE field IS NULL. Or IS NOT NULL
if you want those:-)
Well, one could try this:
s
- Original Message -
> From: "lejeczek"
> Subject: Re: find any row with NULL
>
> shame NULL won't work as in:
> > select user_id,completetion_time from depression where
> NULL in(email_me, other_diagnosis);
> or does it?
No, because NULL != NULL - it is why there are dedicated operators
- Original Message -
> From: "lejeczek"
> Subject: Re: find any row with NULL
> ok, whereas that fist example was about all (and find
> columns' names without knowing) columns - would there be a
> simple(r) syntax to find that (not)NULLs in a list of given
> column names? Or it has to be
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...
Now - would searching, saving/storing then removing NULL vs ALLbutNULL
in a simple DB with one table wich has only primary key be sa
...
What is "removing NULL"? Deleting the record with NULL?
It has no bearing on the primary key, because NULL never is allowed in one.
It seems to me that r