【MySQL】将查询结果导出到一个文件

（1）SQL示例如下，要将如下的SQL查询结果导出到一个txt文件，便于研发做结果内容的核对

select
    ps_partkey,
    sum(ps_supplycost * ps_availqty) as value
from
    partsupp,
    supplier,
    nation
where
    ps_suppkey = s_suppkey
    and s_nationkey = n_nationkey
    and n_name = 'GERMANY'
group by
    ps_partkey having
        sum(ps_supplycost * ps_availqty) > (
            select
                 sum(ps_supplycost * ps_availqty) * 0.0000010000
            from
                partsupp,
                supplier,
                nation
            where
                ps_suppkey = s_suppkey
                and s_nationkey = n_nationkey
                and n_name = 'GERMANY'
        )
order by
    value desc;

（2）将如上SQL结果导出的方法

1、新建一个SQL文件，命名为c.sql

2、在存放c.sql的目录下执行如下的命令，注意更换自己数据库的相关信息

mysql -h192.168.30.118 -P3001 -uroot -pAa123456 tpch_syw <c.sql >query_11_result.text