根据几个条件 查询表的条数解决方案

根据几个条件 查询表的条数
一张表： t_topoobject 
字段： id,name,location,status


我现在要查询:
条件1：t_topoobject 的总数
条件2：根据status（int类型）判断来查询条数（多个条件，如：status=0，status=1，status=2）


ps：
如果我还有一张表，跟上面一样。 2张表可以一起查询不？

[解决办法]
select count(*),sum(if(status=0,1,0)), sum(if(status=1,1,0)), ... from tt


如果我还有一张表，跟上面一样。 2张表可以一起查询不？
详细说明，是否有关系，直接UNION ALL不行？
select count(*),sum(if(status=0,1,0)), sum(if(status=1,1,0)), ... from 

(select * from tt1 union all select * from tt2) a
[解决办法]
贴建表及插入记录的SQL，及要求结果出来看看
[解决办法]

SQL code

mysql> SELECT * FROM `ti_host` ;+------+--------+----------+------------+---------+--------------+------------+-----------------+--------+--------+-----------+--------------+----------+--------------+-------------------+--------------+------------------+----------------+----------------+| MOID | HOSTSN | HOSTNAME | CPUCORENUM | CPUDESC | CPUFREQUENCY | HOSTSTATUS |MANAGEDIPADDRESS | MEMORY | OS     | OSVERSION | AGENTVERSION | HOSTTYPE | TOTACAPACITY | TOTALCAPACITYUNIT | USEDCAPACITY | USEDCAPACITYUNIT | phisicalMemSiz | virtualMemSize |+------+--------+----------+------------+---------+--------------+------------+-----------------+--------+--------+-----------+--------------+----------+--------------+-------------------+--------------+------------------+----------------+----------------+|    1 | 234    | 234      |        234 | 234     | 234          |          1 |10.27.81.131     | 324    | 234234 | 1         | 234          |   234234 | 23424        | 234               | 234          | 234              | 234 | 234            ||    2 | 234    | 234      |        234 | 23      | 423          |          0 |10.27.81.131     | 345    | 345    | 1         | 345          |      234 | 234         | 234234            | 2342         | 23423            | 424 | 234            |+------+--------+----------+------------+---------+--------------+------------+-----------------+--------+--------+-----------+--------------+----------+--------------+-------------------+--------------+------------------+----------------+----------------+2 rows in set (0.00 sec)mysql> SELECT COUNT(*),SUM(IF(hoststatus=0,1,0)), SUM(IF(hoststatus=1,1,0)),    -> SUM(IF(hoststatus=2,1,0))    ->  FROM `ti_host`;+----------+---------------------------+---------------------------+--------------------------+| COUNT(*) | SUM(IF(hoststatus=0,1,0)) | SUM(IF(hoststatus=1,1,0)) | SUM(IF(hosstatus=2,1,0)) |+----------+---------------------------+---------------------------+--------------------------+|        2 |                         1 |                         1 |             0 |+----------+---------------------------+---------------------------+--------------------------+1 row in set (0.00 sec)mysql>
[解决办法]
SQL code
mysql> select * from ti_host;+------+--------+----------+------------+---------+--------------+------------+------------------+--------+--------+-----------+--------------+----------+---------------+-------------------+--------------+------------------+-----------------+----------------+| MOID | HOSTSN | HOSTNAME | CPUCORENUM | CPUDESC | CPUFREQUENCY | HOSTSTATUS |MANAGEDIPADDRESS  | MEMORY | OS     | OSVERSION | AGENTVERSION | HOSTTYPE | TOTALCAPACITY | TOTALCAPACITYUNIT | USEDCAPACITY | USEDCAPACITYUNIT | phisicalMemSize | virtualMemSize |+------+--------+----------+------------+---------+--------------+------------+------------------+--------+--------+-----------+--------------+----------+---------------+-------------------+--------------+------------------+-----------------+----------------+|    1 | 234    | 234      |        234 | 234     | 234          |          1 |10.27.81.131      | 324    | 234234 | 1         | 234          |   234234 | 234234        | 234               | 234          | 234              | 234             | 234            ||    2 | 234    | 234      |        234 | 23      | 423          |          0 |10.27.81.131      | 345    | 345    | 1         | 345          |      234 | 234           | 234234            | 2342         | 23423            | 424             | 234            |+------+--------+----------+------------+---------+--------------+------------+------------------+--------+--------+-----------+--------------+----------+---------------+-------------------+--------------+------------------+-----------------+----------------+2 rows in set (0.00 sec) 
 
[解决办法]
引用
2：hoststatus =0,hoststatus =1，hoststatus =2的时候得出条数

[解决办法]
这个是记录集，在语言中打开记录集，取值即可
[解决办法]
探讨


引用:

引用2：hoststatus =0,hoststatus =1，hoststatus =2的时候得出条数你的表中根本找不到status这个字段


HOSTSTATUS

[解决办法]
1.select count（id） from ti_host；
2。select count(id),HOSTSTATUS from ti_host group by HOSTSTATUS;