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Version: Latest-3.3

null_or_empty

Description

This function returns true when the string is empty or NULL. Otherwise, it returns false.

Syntax

BOOLEAN NULL_OR_EMPTY (VARCHAR str)

Examples

MySQL > select null_or_empty(null);
+---------------------+
| null_or_empty(NULL) |
+---------------------+
| 1 |
+---------------------+

MySQL > select null_or_empty("");
+-------------------+
| null_or_empty('') |
+-------------------+
| 1 |
+-------------------+

MySQL > select null_or_empty("a");
+--------------------+
| null_or_empty('a') |
+--------------------+
| 0 |
+--------------------+

keyword

NULL_OR_EMPTY