How to fix 'Selecting rows without null or blank value in each column'?
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Im having trouble using this code here:
select * from toadd where pcode = '' or pcode is null or brand = '' or brand is null or description = '' or description is null;
I am trying to return values that doesn't have null or blank value within them columns above.
My problem is: I have coded the query to only return values that are only null or blank values see if it actually works and then Ill use a delete statement based on that query.
But it still returns columns with filled data, even tho I have said not to show any values that are filled in the query.
Not sure why its doing this?
All my columns types are set up as
VARCHAR I have mix data with text and numbers.
Here is my table layout:
Table: outerb Columns: id int(11) AI PK pcode varchar(255) brand varchar(255) description varchar(255) size varchar(255) barcode varchar(255)
This is what it looks like currently
enter image description here
this is my expected result:
enter image description here
If you want rows where all of the tested columns are not empty or not null
select * from toadd where !(pcode = '' or pcode is null) AND !(brand = '' or brand is null) AND !(description = '' or description is null);
If you want to exclude rows where one or more of the columns are empty or null
select * from toadd where !(pcode = '' or pcode is null) OR !(brand = '' or brand is null) OR !(description = '' or description is null);
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or condition to
select * from toadd where (pcode = '' or pcode is null) and ( brand = '' or brand is null) and (description = '' or description is null)
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You can get the desired result using the following SQL query
SELECT * FROM `outerb ` WHERE Length(`pcode `) > 0 AND Length(`brand `) >0 AND Length(`description `) > 0
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- Add a constraint that refuses zero-length strings.
- Based on your recent photo addition of expected output, you actually don't want any result that will return either three of those as ('' or NULL), correct?
- Yeah thats correct, let me rewrite my question alittle bit. Thanks for that
- Hi, this query returns me 0 values. I have attached some images in question and updated the question slightly for better understanding
- quick question what does the
- it's a negation, same as NOT.
- This returns me no 0 rows. I have updated my question and added in my table structure