[英]SQL/PHP - Join 2 Tables with data from other table
This is the query for SQL statement 这是对SQL语句的查询
UPDATE TrendingEvents
SET Name = ?, Image = ?, Date = ?, EventCategory = ?
WHERE ID = ?;')
I would like to access the ID of the other table within my TrendingEvents table. 我想访问TrendingEvents表中另一个表的ID。 This is the example I've done although it doesn't fully work; 这是我做过的示例,尽管它不能完全起作用。
UPDATE TrendingEvents INNER JOIN
Events AS eID
ON TrendingEvents.ID = Events.ID
SET Name = ?, Image = ?, Date = ?, EventCategory = ?
WHERE eID = ?;')
I would like to update the TrendingEvents table with the ID column from Events table. 我想使用事件表中的ID列更新TrendingEvents表。
The error I'm getting from my statement is 我从陈述中得到的错误是
Uncaught PDOException: SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'Name'
Which just shows that I've poorly designed my query. 这只是表明我对查询的设计不佳。
Both tables seem to contain a column called Name. 这两个表似乎都包含一个名为Name的列。 You need to properly prefix the fields with the table name, like : 您需要使用表名正确为字段加上前缀,例如:
UPDATE
TrendingEvents AS t
INNER JOIN Events AS e
ON t.ID = e.ID
SET
t.Name = ?,
t.Image = ?,
t.Date = ?,
t.EventCategory = ?
WHERE e.eID = ?
You have misused the table alias, so your query should not even compile. 您已经滥用了表别名,因此查询甚至不应编译。 Try this: 尝试这个:
UPDATE TrendingEvents te INNER JOIN
Events e
ON te.ID = e.ID
SET te.Name = ?,
te.Image = ?,
te.Date = ?,
te.EventCategory = ?
WHERE e.eID = ?;
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.