在SQL中对同一个字段不同值,进行数据统计操作

select b.corporateOrgName, b.corporateOrgGuid companyId,
count(case when bc.ftype not in(1,2) then 1 else 0 end ) total,
count(case when bc.ftype in(3,4,5) then 1 else 0 end ) usetotal,
count(case when bc.ftype = 6 then 1 else 0 end ) saveTotal,
count(case when bc.ftype = 7 then 1 else 0 end ) returnTotal
from B_seal_cycle bc
join B_seal b
on bc.sealId = b.id
where b.corporateOrgName like '%%'
group by b.corporateOrgName,b.corporateOrgGuid

select b.corporateOrgName, b.corporateOrgGuid companyId,
count(case when bc.ftype not in(1,2) then 1 end ) total,
count(case when bc.ftype in(3,4,5) then 1 end ) usetotal,
count(case when bc.ftype = 6 then 1 end ) saveTotal,
count(case when bc.ftype = 7 then 1 end ) returnTotal
from B_seal_cycle bc
join B_seal b
on bc.sealId = b.id
where b.corporateOrgName like '%%'
group by b.corporateOrgName,b.corporateOrgGuid

select b.corporateOrgName, b.corporateOrgGuid companyId,
sum(case when bc.ftype not in(1,2) then 1 else 0 end ) total,
sum(case when bc.ftype in(3,4,5) then 1 else 0 end ) usetotal,
sum(case when bc.ftype = 6 then 1 else 0 end ) saveTotal,
sum(case when bc.ftype = 7 then 1 else 0 end ) returnTotal
from B_seal_cycle bc
join B_seal b
on bc.sealId = b.id
where b.corporateOrgName like '%%'
group by b.corporateOrgName,b.corporateOrgGuid

{DESCRIBE | 
DESC
} tbl_name [col_name | wild]

mysql> 
desc
ol_user username\G

mysql_connect(
'localhost'  
,   
'root'  
,   
'root'   
);
   
mysql_select_db(   
'demo'   
); 
$test = mysql_query(
'Describe cdb_posts first'
); 
$test = mysql_fetch_array($test);