mysql - 从两列中选择值并将它们连接到不同表上的列中

Question

我对 SQL 有点陌生，正在尝试按照上面的描述进行操作。以下是我的查询:

SELECT
     CONCAT (first_name, last_name) INTO full_name_variable
FROM
    table_1
WHERE
    phone_number = new.number;

这似乎不起作用。但是，当我使用 AS 使用此查询时，它可以工作。像这样:

SELECT
      CONCAT (first_name, last_name) AS full_name_variable
FROM
      table_1
WHERE
    phone_number = new.number;

非常感谢您的帮助

Answer 1

明确使用join来代替

SELECT CONCAT (first_name, last_name) INTO full_name_variable
FROM table_1 t1
INNER JOIN tabke_2 t1 
       ON t1.phone_number = t2.number;

或者您可以使用INSRET INTO语句

INSERT INTO full_name_variable (full_name)
SELECT CONCAT (first_name, last_name) 
FROM table_1 t1
INNER JOIN tabke_2 t1 
      ON t1.phone_number = t2.number;