解决ERROR 1093 (HY000): 在删除MySQL列中的最低值时，无法在FROM子句中指定目标表的更新

首先创建一个表-

mysql> create table DemoTable1597
   -> (
   -> Marks int
   -> );
Query OK, 0 rows affected (0.69 sec)

使用插入命令向表中插入一些记录-

mysql> insert into DemoTable1597 values(45);
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable1597 values(59);
Query OK, 1 row affected (0.24 sec)
mysql> insert into DemoTable1597 values(43);
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable1597 values(85);
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable1597 values(89);
Query OK, 1 row affected (0.12 sec)

使用select语句显示表中的所有记录-

mysql> select * from DemoTable1597;

这将产生以下输出-

+-------+
| Marks |
+-------+
|    45 |
|    59 |
|    43 |
|    85 |
|    89 |
+-------+
5 rows in set (0.00 sec)

以下是删除ERROR 1093 (HY000)的查询语句。我们在此删除了最低值-

mysql> delete from DemoTable1597
   -> where Marks=(
   -> select lowestMarks from ( select min(Marks) as lowestMarks from DemoTable1597 ) as deleteRecord
   -> ) limit 1;
Query OK, 1 row affected (0.11 sec)

让我们再次检查表的记录-

mysql> select * from DemoTable1597;

这将产生以下输出-

+-------+
| Marks |
+-------+
|    45 |
|    59 |
|    85 |
|    89 |
+-------+
4 rows in set (0.00 sec)

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