NULL_OR_EMPTY
Description
The null_or_empty function is used to determine whether the given value is not NULL and not empty. If the input value is neither NULL nor empty, it returns true; otherwise, it returns false.
Syntax
NULL_OR_EMPTY (<str>)
Parameters
<str>: String type, the string to be checked for NULL or empty.
Return Value
Returns true if the string is an empty string or NULL; otherwise, returns false.
Examples
- Example 1
select null_or_empty(null), null_or_empty("");, null_or_empty(" ");+---------------------+-------------------+--------------------+
| null_or_empty(null) | null_or_empty("") | null_or_empty(" ") |
+---------------------+-------------------+--------------------+
| 1 | 1 | 0 |
+---------------------+-------------------+--------------------+
