Exclude lines results that have NULL value in any field?

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I have a simple Select like this

SELECT * FROM `table` WHERE fk_id=10020

It's works, but there are some fields that is NULL. There isn't a pattern so a did

SELECT * FROM `table` WHERE fk_id=10020 AND NOT NULL

trying to select only results with all fields with data.

but did not worked, Results in a Empty Results, it did not bring anything.

How could I do this - exclude lines results that have null value in any field?

try

SELECT * FROM `table` where fk_id=10020 and data IS NOT NULL

repeat <column> IS NOT NULL for each column you need

How to SELECT Records With No NULL Values in MySQL, Use the MySQL engine to only grab records that you desire while excluding those all records in our books table where the primary_author column is not NULL In some cases you may desire to retrieve results where no NULL values are  SELECT * FROM `table` WHERE fk_id=10020 AND NOT NULL trying to select only results with all fields with data. but did not worked, Results in a Empty Results, it did not bring anything. How could I do this - exclude lines results that have null value in any field?

It should be:

SELECT * 
FROM table 
WHERE fk_id = 10020 AND
      fk_id IS NOT NULL;

How to remove null values from a table, How do I remove a null row in SQL query? Excluding Values. This tip is suitable for all versions of Microsoft Access . Excluding Values in a Query (Example One) I have a query problem. I am trying to exclude data and pull up the rest.

Comment

this is an approach, but is there a way to do that with only one command, because if there are a lot of columns, it will get enormous. Of course this is not a problem, just to know if there are a way to automatize this.

There is a way to avoid specifying each column (maybe not best from performance point of view but it should be more than enough):

CREATE TABLE tab(id INT PRIMARY KEY,fk_id INT,col1 CHAR(9),col2 CHAR(9),col3 INT)

INSERT INTO tab(id, fk_id, col1, col2, col3)
VALUES
(1,10020,'a','b',100),
(2,10020,'a2','b2',NULL),
(3,10020,'a3',NULL,300),
(4,10020,NULL, 'b4',400),
(5,10020,NULL, NULL,500),
(6,10020,NULL, NULL,NULL),
(7,10020,'a7','b7', 700);

SELECT * FROM tab where fk_id=10020;

┌────┬───────┬──────┬──────┬──────┐
│ id │ fk_id │ col1 │ col2 │ col3 │
├────┼───────┼──────┼──────┼──────┤
│  1 │ 10020 │ a    │ b    │ 100  │
│  2 │ 10020 │ a2   │ b2   │ null │
│  3 │ 10020 │ a3   │ null │ 300  │
│  4 │ 10020 │ null │ b4   │ 400  │
│  5 │ 10020 │ null │ null │ 500  │
│  6 │ 10020 │ null │ null │ null │
│  7 │ 10020 │ a7   │ b7   │ 700  │
└────┴───────┴──────┴──────┴──────┘

And final query:

SELECT * FROM tab t1 NATURAL JOIN tab t2 WHERE t1.fk_id=10020;

┌────┬───────┬──────┬──────┬──────┐
│ id │ fk_id │ col1 │ col2 │ col3 │
├────┼───────┼──────┼──────┼──────┤
│  1 │ 10020 │ a    │ b    │  100 │
│  7 │ 10020 │ a7   │ b7   │  700 │
└────┴───────┴──────┴──────┴──────┘

DBFiddle Demo


As far as I know you can't automatize at SQL level. May be wrinting of small method at java\php\python (whatever you use) will help you- @xander27

Another approach could be prepared statement and building SQL query based on INFORMATION_SCHEMA metadata.

SET @s = 
(SELECT CONCAT('SELECT * FROM tab WHERE fk_id=? ',
        GROUP_CONCAT(CONCAT('AND ',COLUMN_NAME, ' IS NOT NULL ') SEPARATOR ''))
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'tab');

PREPARE stmt2 FROM @s;
SET @a = 10020;
EXECUTE stmt2 USING @a;
DEALLOCATE PREPARE stmt2;

DBFiddle Demo2

Is it possible to find null values in an SQL table without knowing the , Are there any columns with null values in the Users table? How to SELECT Records With No NULL Values in MySQL Posted by AJ Welch While most applications will have some form of server-side or even client-side technology that can be used to filter out database query results which may contain NULL or empty values, using another language and that additional burden of executing code is typically more costly

SQL: IS NOT NULL Condition, that are unique to one result. To use the EXCEPT operator, both queries must return the same number of columns and those columns must be of compatible data types. Re: Omit Rows where field is NULL Table Box. Hi Sébastien, maybe you can try doing it with a simple table chart. This chart has an option to "Supress Zero Values" in presentation tab. A value is Null() when it has no value, and zero is a value (and an empty space is also a value), so it's not Null()

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Comments
  • this is an approach, but is there a way to do that with only one command, because if there are a lot of columns, it will get enormous. Of course this is not a problem, just to know if there are a way to automatize this...
  • As far as I know you can't automatize at SQL level. May be wrinting of small method at java\php\python (whatever you use) will help you
  • @xander27 Actually it is doable in pure MySQL