yimubanggong的专栏

1 用法Usage: vwload [options] database file ...Options:-a --attributes attr,...        List of attributes to load (default: all)-B --rollback on/off            Roll back on failure-c --cluster

问题一： CREATE TABLE: Improper use of NULL in the target list;    use conversion function to specify data type of the null value.字段列表中，null 作为字段时候会报此错误 ，作个转换就好 cast(null as 数据类型)  as 字段名