错误1064 - MySQL中针对INSERT语句的SQL语法

Question

我正在尝试此查询，但无法正常工作。

ERROR: #1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '= (SELECT id_university FROM university WHERE university = "xxx") , `singl' at line 2

INSERT INTO `database_charts`.`university_has_single_user` (
     `university_id_university` = (SELECT id_university FROM university WHERE university = "xxx") , 
     `single_user_users_id_user` = (SELECT users_id_user FROM single_user WHERE users_id_user = "1"), 
     `course_id_course`= (SELECT id_course FROM course WHERE course = "yyy"), 
     `year`= "2000") 

这又如何解决呢？

Answer 1

除非MySQL支持一个很奇怪的语法，这不是你如何写一个INSERT语句。它采用这种形式：

INSERT INTO <TableName> (<Column1,Column2,..,ColumnN>) VALUES (<Value1,Value2,..,ValueN>) 

所以，你将不得不

INSERT INTO database_charts.university_has_single_user (
    university_id_university, 
    single_user_users_id_user, 
    course_id_course,year) 
VALUES (
    (SELECT id_university FROM university WHERE university = 'xxx'), 
    (SELECT users_id_user FROM single_user WHERE users_id_user = '1'), 
    (SELECT id_course FROM course WHERE course = 'yyy'), 
    '2000' 
) 

警告：我不知道的MySQL是否会真正处理嵌套选择每个列的值，但上述是 INSERT语句通常如何写入。

Answer 2

INSERT INTO TABLE2 (TABLE2_FIELD) 
    SELECT TABLE1_FIELD 
    FROM TABLE1 
    WHERE TABLE1_SOMEFIELD IS 'SOMETHING' 

这里更多http://dev.mysql.com/doc/refman/5.6/en/insert-select.html