Sql server 2008 SQL查询基于对2个表的引用从第二个表中提取列值

抱歉，我试图搜索答案，结果被卡住了

我正在尝试将两个表内部连接以获取一个值，例如

table 1
--------
column a
column b
column c

table 2
--------
column a
column d

因此，我想从

表1

中提取所有列，然后，在

表2中出现
列a
的地方，我想提取
列d

只是不确定内部联接是否正确或如何写入它有四种联接类型：

JOIN: Return rows when there is at least one match in both tables
LEFT JOIN: Return all rows from the left table, even if there are no matches in the right table
RIGHT JOIN: Return all rows from the right table, even if there are no matches in the left table
FULL JOIN: Return rows when there is a match in one of the tables

如所列

您希望从描述中使用左连接

SELECT table1.*, table2.d FROM table1 LEFT JOIN table2 ON table1.a = table2.a

select table1.*, table2.d from table1 left join table2 on table1.a = table2.a