SQL using If Not Null on a Concatenation - Stack Overflow
If I have the table … This will display Firstname-Middlename-Surname e.g. … The second one (Jane’s) displays correct, however since John doesn’t have a middlename, I want it to ignore the second dash.
sql - Concatenate a column only if its not NULL - Stack Overflow
NULL even when several columns are != NULL. Or at least that's what he has asked for.
sql - IN Clause with NULL or IS NULL - Stack Overflow
Postgres is the database Can I use a NULL value for a IN clause? example: … I want to limit to these four values. I have tried the above statement and it doesn't work...
SQL is null and = null - Stack Overflow
What is the difference between … and … and why does the latter not work?
mysql concate check not null - Stack Overflow
I dont want to return null value, how to check not null or how to make isset cond in query …
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!
Ответы@Mail.Ru: Что означает "null"?
NULL может означать следующее: - NULL (Си и Си++) — в языках программирования Си и C++ означает нулевой указатель; аналог для ссылок в Java — null (указателей в Java нет вообще) . - NULL (SQL) — специальное значение (псевдозначение) , которое может быть записано в поле...
SGs2 imei (null null) решение проблемы - YouTube
Не сейчас. Месяц бесплатно. SGs2 imei (null null) решение проблемы. Лунный Енот. Загрузка...
R null values: NULL, NA, NaN, Inf | R-bloggers
#operation on NULL Vector v1 <- c(NULL, NULL, NULL) str(v1) # NULL.