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?
SELECT * FROM `table` where fk_id=10020 and data IS NOT NULL
<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.
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 │ └────┴───────┴──────┴──────┴──────┘
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
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;
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()
How to use the EXCEPT operator, SELECT * FROM ( SELECT student_id, salutation, CASE WHEN salutation IN('Dr.') THEN 'Doctor' END AS NewSalutation FROM You can use query criteria in Access to limit the results based on specific text values. For example the criterion, = "Chicago" shows all items that have the text Chicago. This article has several examples of query criteria that you can use with the Text data type that can help you get more specific query results and find the information that
How to exclude rows containing null values within columns , Where clause excludes rows with Null Values – Learn more on the this query is also excluding results where the ACCOUNT_NAME field is null. There are no special teachers of virtue, because virtue is taught by the How to exclude null field values from search results? 0 Below are the log events I have, where one event has two savedsearch_name fields with two values "Apache_Monitor" and other is "" empty.
- 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