树型结构数据的客户部门SQL显示语句(纯sql语句)

树型结构|数据|显示|语句

SELECT dpcode1 as dpcode,dpname1 as dpname
FROM BASE_CUSTDEPT where dpcode1>0 and dpcode2=0 and dpcode3=0 and dpcode4=0
union all
SELECT dpcode1+dpcode2 as dpcode,dpname1+dpname2 as dpname
FROM BASE_CUSTDEPT where dpcode1>0 and dpcode2>0 and dpcode3=0 and dpcode4=0
union all
SELECT dpcode1+dpcode2 +dpcode3 as dpcode,dpname1+dpname2+dpname3 as dpname
FROM BASE_CUSTDEPT where dpcode1>0 and dpcode2>0 and dpcode3>0 and dpcode4=0
union all
SELECT dpcode1+dpcode2 +dpcode3+dpcode4 as dpcode,dpname1+dpname2+dpname3+dpname4 as dpname
FROM BASE_CUSTDEPT where dpcode1>0 and dpcode2>0 and dpcode3>0 and dpcode4>0