1. 程式人生 > >LEFT(s,n)

LEFT(s,n)

foo lec nbsp code pre logs oot select sel

LEFT(s,n) 用於返回字符串 s 開始的最左邊 n 個字符

mysql> SELECT LEFT(football, 5);
+---------------------+
| LEFT(football, 5) |
+---------------------+
| footb               |
+---------------------+

LEFT(s,n)