MySQL CONCAT returns NULL if any field contain NULL
I have following data in my table "devices" … I executed below query … It returns result given below … How to come out of this so that it should ignore NULL AND result should be …
sql - CONCAT'ing NULL fields - Stack Overflow
I have a table with three fields, FirstName, LastName and Email. Here's some dummy data: … Now, if I do: … Vitals for Joe is null, as there is a single null field. How do you overcome this behaviour?
sql - Union to handle NULL values - Stack Overflow
select a,b,null,null from table1 union select null,null,c,d from table2 union select null,null,null,null,e,f from table3.
sql - Return 0 if field is null in MySQL - Stack Overflow
In MySQL, is there a way to set the "total" fields to zero if they are NULL? Here is what I have: … The data comes out fine, except the NULL fields should be 0. How can I return 0 for NULL in MySQL?
sql - Counting null and non-null values in a single... - Stack Overflow
SELECT COUNT(*), 'null_tally' AS narrative FROM us WHERE a IS NULL UNION SELECT COUNT(*), 'not_null_tally' AS narrative FROM us WHERE a IS NOT
How to exclude NULL values inside CONCAT MySQL?
If I have this - tadd is the Address table: … Is there a way to exclude the apt_number if it doesn't exist? I was thinking of: … But it will return only those rows with apt_number...
mysql - Select column names whose entries are not null
I would like to have a list of those columns of a table that have at least one non-NULL data entries in them. In other words, I would like to get the column names for which the following returns at least one...
SQL NULL Values - IS NULL and IS NOT NULL
Note: A NULL value is different from a zero value or a field that contains spaces. A field with a NULL value is one that has been left blank during record creation!
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