mysql添加分区出错怎么办？
mysql添加分区出错，报“1503”错误的原因：每一个分区表中的公式中的列，必须在主键“unique key”中包括，否则就报错；解决方法：先使用“PRIMARY KEY”关键字创建一个复合主键，将分
mysql添加分区出错，报“1503”错误的原因：每一个分区表中的公式中的列，必须在主键“unique key”中包括，否则就报错；解决方法：先使用“PRIMARY KEY”关键字创建一个复合主键，将分区字段加入到主键中，再进行分区操作。
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如果分区字段没有包含在主键字段内，如表A的主键为ID,分区字段为createtime ，按时间范围分区，代码如下：
This section discusses the relationship of partitioning keys with primary keys and unique keys. The rule governing this relationship can be expressed as follows: All columns used in the partitioning expression for a partitioned table must be part of every unique key that the table may have.
In other words,every unique key on the table must use every columnin the table's partitioning expression. (This also includes the table's primary key, since it is by definition a unique key. This particular case is discussed later in this section.) For example, each of the following table creation statements is invalid:
