Mysql 報錯 1222 程式碼

阿新 • • 發佈：2019-01-09

[Err] 1222 - The used SELECT statements have a different number of columns

1、錯誤描述

[java] view plain copy

[Err] 1222 - The used SELECT statements have a different number of columns

[html] view plain copy

[SQL]SELECT t.id,t.eage,t.ename,t.esex FROM emp t
UNION ALL
SELECT s.age,s.`name`,s.id FROM t_stu_info s;
[Err] 1222 - The used SELECT statements have a different number of columns

2、錯誤原因

[sql] view plain copy

SELECT t.id,t.eage,t.ename,t.esex FROM emp t
UNION ALL
SELECT s.age,s.`name`,s.id FROM t_stu_info s;

兩個查詢SQL語句用union all連線，但是欄位個數不一致，導致出錯

3、解決辦法

（1）根據需求，下面一個select添加個欄位

（2）第一個select中刪除一個欄位

Mysql 報錯 1222 程式碼

[Err] 1222 - The used SELECT statements have a different number of columns 1、錯誤描述 [java] view plain copy

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Mysql 報錯 1222 程式碼

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