内连接mysql？

Question

这是我的内部联接，它似乎不起作用，语法有什么问题吗？

$db->query("SELECT name FROM stockists INNER JOIN shops ON stockists.name = shops.name");

Answer 1

尝试此查询

SELECT s.`name` FROM stockists st INNER JOIN shops s ON st.`name`= s.`name`

执行....

Answer 2

更改为

SELECT shops.name

name 列不明确，存在于两个表（商店和库存商）中

喜欢"SELECT shops.name FROM stockists INNER JOIN shops ON stockists.name = shops.name"

请阅读stackoverflow

Answer 3

您写道：

$db->query("SELECT name FROM stockists INNER JOIN shops ON stockists.name = shops.name");

这里的问题是您应该指定您希望拥有的名称：

$db->query("SELECT stockists.name FROM stockists INNER JOIN shops ON stockists.name = shops.name");

或

$db->query("SELECT shops.name FROM stockists INNER JOIN shops ON stockists.name = shops.name");