Select 个来自多个表的列

Question

我有多个具有相同主键字段但没有其他相同字段的表。我想 select 匹配特定主键的所有表中的列的集合，如下所示：

SELECT T1.a, T2.b, ..., TN.z FROM T1, T2, ..., TN WHERE T1.pk = "abc"

Answer 1

SELECT T1.a, T1.b, ..., TN.z
FROM T1 INNER JOIN T2 ON T1.pk = T2.pk
INNER JOIN T3 on T1.pk = T3.pk
...
INNER JOIN TN on T1.pk = TN.pk
AND TN.pk = "abc"

或更短的形式（感谢@Abelisto！）。

SELECT T1.a, T1.b, ..., TN.z
FROM T1 JOIN T2 using(pk)
JOIN T3 using(pk)
...
JOIN TN using(pk)
WHERE TN.pk = "abc"

Select 个来自多个表的列

Select columns from multiple tables

sql

postgresql

django-database