Is it possible to do a select statement that takes only NOT NULL values? Right now I am using this: SELECT * FROM table And then I have to filter out the null values with a php loop. Is there a ...

Aug 21, 2010 · SELECT pid FROM planets WHERE userid = NULL; This will not give you the expected result, because from mysql doc In SQL, the NULL value is never true in comparison to any other …

In MySQL, can I select columns only where something exists? For example, I have the following query: select phone, phone2 from jewishyellow.users where phone like '813%' and phone2 I'm trying to

Feb 22, 2012 · SELECT c.name, COALESCE(a.addressid,0) AS addressexists FROM customers c LEFT JOIN addresses a ON c.customerid = a.customerid WHERE customerid = 123 This first …

Sempre me perguntei isso: Por que devemos usar IS NOT NULL ao invés de <> NULL? Pois, quando faço como no segundo caso, nenhum resultado é encontrado. Exemplo: SELECT * FROM …

Oct 24, 2018 · The result of a SELECT query is a table, and has to have the same number of columns in every row. What do you expect the result to be if there are different numbers of non-null columns?

SELECT COALESCE(field_a, field_b) COALESCE is an ANSI standard function that returns the first non-null value from the list of columns specified, processing the columns from left to right. So in the …

It depend on what you mean exactly by "everything that is not null": all columns must not be null select * from schedule where col1 is not null AND col2 is not null AND .. at least one column should be non …

Apr 13, 2021 · I have a table called table1 It has 100 columns: {col1, col2, ..., col100} I understand how to SELECT rows not containing null values in a specific column for instance col1:

SELECT `table1`.*, GROUP_CONCAT(id SEPARATOR ',') AS `children_ids` FROM `table1` WHERE (enabled = 1) GROUP BY `ancestor` So now let's say I have 5 rows and the ancestor field is NULL, it …