not_null_or_empty
description
Syntax
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。
example
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