来自两个表的具有相同名称的mysql额外列

Question

表 1 有列: entry_id user_id ...表 2 有列:entry_id user_id ...

user_id 条目并不总是相同，所以我想提取它们，以便稍后在我的脚本中比较它们

SELECT * FROM 
table1 as t1
INNER JOIN table2 as t2 on t1.entry_id=t2.entry_id
WHERE t1.user_id='%s'

我想提取 t1.user_id 和 t2.user_id ...问题是结果数组只有 user_id

谢谢

Answer 1

使用AS关键字:

SELECT
  t1.user_id as t1_user_id
  ,t2.user_id as t2_user_id
FROM table1 as t1
INNER JOIN table2 as t2
  ON t1.entry_id=t2.entry_id
WHERE t1.user_id='%s'