hive表有很多列，大部分列需要，其中一列不需要，例如分区表的dt字段不要，例如1000列中去掉1列
实现方法 1. 方法hive sql： 实现功能 select `(dt)?+.+` from test; 这里dt是不要的字段。
以上sql生效需要设置一个参数：
set hive.support.quoted.identifiers=none;
2.demo测试让语法生效
hive> set hive.support.quoted.identifiers=none; hive> set hive.cli.print.header; hive.cli.print.header=false hive> set hive.cli.print.header=true;
表全部字段
hive> select * from test;
hook status=true,operation=QUERY
OK
name friends children address
songsong ["bingbing","lili"] {"xiao song":18,"xiaoxiao song":19} {"street":"hui long guan","city":"beijing"}
yangyang ["caicai","susu"] {"xiao yang":18,"xiaoxiao yang":19} {"street":"chao yang","city":"beijing"}
Time taken: 0.14 seconds, Fetched: 2 row(s)
从select * 中去掉一个字段address
hive> select `(address)?+.+` from test;
hook status=true,operation=QUERY
OK
name friends children
songsong ["bingbing","lili"] {"xiao song":18,"xiaoxiao song":19}
yangyang ["caicai","susu"] {"xiao yang":18,"xiaoxiao yang":19}
Time taken: 0.144 seconds, Fetched: 2 row(s)
从select * 中去掉多个字段
hive> select `(name|address)?+.+` from test;
hook status=true,operation=QUERY
OK
friends children
["bingbing","lili"] {"xiao song":18,"xiaoxiao song":19}
["caicai","susu"] {"xiao yang":18,"xiaoxiao yang":19}
Time taken: 0.149 seconds, Fetched: 2 row(s)
总结
set hive.support.quoted.identifiers=none;
select `(dt)?+.+` from test; 这里dt是不要的字段。 就可以实现从select * 中去掉一列
