Ví dụ về việc sử dụng Is not null trong Tiếng anh và bản dịch của chúng sang Tiếng việt
{-}
-
Colloquial
-
Ecclesiastic
-
Computer
Checks that the object is not null.
If levels(x) is not NULL, it is returned.
It returns the first value that is not null.
Type Is Not Null to include records that contain attachments.
Before proceeding, always make sure that the Sensor object is not null.
It will return the left operand if it is not NULL, otherwise it will return the right.
The isset()function is used to determine if a variable is set and is not NULL.
If s is not NULL, the wctomb() function returns the number of bytes that have been written to the byte array at s.
Another precaution you should take when closing connectionsis to make sure the connection object is not null.
However, to make sure that the property value is not null, run this command to fully update the setting.
If expr identifies multiple fields, the Count function counts a recordonly if at least one of the fields is not Null.
For example, it can check that the cardholder name is not null, or that the credit card number has the right number of digits.
The following example shows how you can limit the count to records in which either ShippedDate orFreight is not Null.
To find records where the tutorial_count column is or is not NULL, the queries should be written like this.
Imagine the typical example where you receive some data to update the UI,but you only need to do it in the case the data is not null.
The coalesce operatorreturns the result of its first operand if it exists and is not null, and the second operand in any other cases.
If the result of resolveActivity() is not null, then there is at least one app available that can handle the Intent, and it's safe to call startActivity().
If you want to compare a value to Null in an expression,use the Is Null or the Is Not Null operator.
The result is true if and only if the argument is not null and it represents the same interface address as this object.
If endptr is not NULL, a pointer to the character after the last character used in the conversion is stored in the location referenced by endptr.
To filter for records that have null(missing), non-null, blank(empty or""), or nonblank values,type Is Null, Is Not Null,"", or Not"" in the field.
The result is true if and only if the argument is not null and is a Calendar object that represents the same calendar as this object.
There are a couple points to be made about how we closed the connection in Listing 1: the Close()method is called in a finally block and we ensure that the connection is not null before closing it.
Returns true if and only if the argument is not null and is an abstract pathname that denotes the same file or directory as this abstract pathname.
(Optional) In case Flow is not NULL, FlowSize should point to a integer where the number of flow elements(always less or equal to n1+n2-1) will be written.
The same method must be used when the initial conditions of the problem are not null.
If the value of variant isn't Null, then the Nz function returns the value of variant.
To fix this error we have two options, we can either assert(!!)that name isn't NULL, or we can use what's known as a safe call(?).