mysql统计多表数据量_mysql⼀条sql查询多个表数据量select
(select count(*) from device0 where status != 0),
(select count(*) from device1 where status != 0),api接口临时关闭是什么意思
(select count(*) from device2 where status != 0),
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(select count(*) from device4 where status != 0),
(select count(*) from device5 where status != 0),
(select count(*) from device6 where status != 0),
(select count(*) from device7 where status != 0),
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(select count(*) from device9 where status != 0)
思莱德selected
as count
select
(select count(*) from device0 where status != 0)+
深圳java培训机构(select count(*) from device1 where status != 0)+
(select count(*) from device2 where status != 0)+
(select count(*) from device3 where status != 0)+
mysql语句多表查询(select count(*) from device4 where status != 0)+
(select count(*) from device5 where status != 0)+
(select count(*) from device6 where status != 0)+
(select count(*) from device7 where status != 0)+
(select count(*) from device8 where status != 0)+
(select count(*) from device9 where status != 0)
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