我想從我的表中獲取的行數,其中X == 7關於MySQL和PHP
+----+----------+-------+---+
| id | username | email | X |
+----+----------+-------+---+
| 1 | | | 7 |
| 2 | | | 7 |
| 3 | | | 7 |
| 4 | | | |
| 5 | | | |
+----+----------+-------+---+
有3行,其中X == 7
如何才能得到這些數量行?
SELECT COUNT (*)作爲從x = 7表中的總和這樣的事情! – 2013-02-13 12:05:00