repeat
Description
Syntax
‘VARCHAR repeat (VARCHAR str, INT count)
Repeat the str of the string count times, return empty string when count is less than 1, return NULL when str, count is any NULL
example
mysql> SELECT repeat("a", 3);
+----------------+
| repeat('a', 3) |
+----------------+
| aaa |
+----------------+
mysql> SELECT repeat("a", -1);
+-----------------+
| repeat('a', -1) |
+-----------------+
| |
+-----------------+