从联合查询的结果中选择Oracle

Question

我正在尝试对联盟的结果进行选择。我正在运行Oracle 11g。我运行了以下查询，得到ORA-00933: SQL command not properly ended

我查看了很多其他帖子，这应该有效，但不适合我。任何帮助将不胜感激。

SELECT tbl.name
FROM
(
    SELECT name FROM customer
    UNION
    SELECT name FROM vendor
) AS tbl;

Answer 1

删除as。

SELECT tbl.name
FROM
(
    SELECT name FROM customer
    UNION
    SELECT name FROM vendor
) tbl

Answer 2

Oracle不支持as表别名。所以，只需删除它：

SELECT tbl.name
FROM (SELECT name FROM customer
      UNION
      SELECT name FROM vendor
     ) tbl;