NOT_NULL_OR_EMPTY

not_null_or_empty

描述

语法

BOOLEAN NOT_NULL_OR_EMPTY (VARCHAR str)

如果字符串为空字符串或者NULL，返回false。否则，返回true。

举例

MySQL [(none)]> select not_null_or_empty(null);
+-------------------------+
| not_null_or_empty(NULL) |
+-------------------------+
|                       0 |
+-------------------------+

MySQL [(none)]> select not_null_or_empty("");
+-----------------------+
| not_null_or_empty('') |
+-----------------------+
|                     0 |
+-----------------------+

MySQL [(none)]> select not_null_or_empty("a");
+------------------------+
| not_null_or_empty('a') |
+------------------------+
|                      1 |
+------------------------+

keywords

NOT_NULL_OR_EMPTY