我加入了一张桌子
SELECT t1.akademik, t1.entity_id, t2.akademik AS akademik_doboru, t2.uid_author
FROM zakwalifikowani1 t1
JOIN dobor2 t2
ON t1.entity_id = t2.uid_author
我加入的表格
akademik | entity_id | akademik_doboru | uid_author |
Feniks | 129 | | 129 |
如何将此联接表中的值 akademik 复制到表dobor2
我试过这样的事情:
$sql=("SELECT t1.akademik, t1.entity_id, t2.akademik AS akademik_doboru, t2.uid_author
FROM zakwalifikowani1 t1 JOIN dobor2 t2 ON t1.entity_id = t2.uid_author");
while ($row = mysql_fetch_array($sql)) {
$a=$row['akademik'];
$b=$row['entity_id'];
mysql_query("INSERT INTO dobor2 ('akademik') VALUES ('$a') WHERE uid_author = '$b' ");
}
如果我使用此代码,则不会发生任何事情:(
答案 0 :(得分:0)
您可以在单个查询中执行此操作。试试这个(没试过):
UPDATE dobor2 t2
JOIN zakwalifikowani1 t1 ON t1.entity_id = t2.uid_author
SET t2.akademik = t1.akademik
答案 1 :(得分:0)
我认为您希望update
不是insert
。您更新单个行中的列。您在表中插入新行。我认为这就是你要找的东西:
update dobor2 d2 join
zakwalifikowani1 z
on z.entity_id = d2.uid_author
set d2.akademik = z.akademik;