sql存儲(chǔ)過程實(shí)例詳解 oracle數(shù)據(jù)庫條件判斷的查詢語句怎么寫?
oracle數(shù)據(jù)庫條件判斷的查詢語句怎么寫?建表,測試數(shù)據(jù):create table test(收款標(biāo)志 int)insert into test values (1)insert into test
oracle數(shù)據(jù)庫條件判斷的查詢語句怎么寫?
建表,測試數(shù)據(jù):
create table test(收款標(biāo)志 int)insert into test values (1)insert into test values (1)insert into test values (1)commit
執(zhí)行:
select case when a.cnt = b.cnt then "未收款" when a.cnt = d.cnt then "已收款" when c.cnt <> 0 then "部分收款" end 收款狀態(tài) from (select count(*) cnt from test) a, (select count(*) cnt from test where 收款標(biāo)志 = 1) b, (select count(*) cnt from test where 收款標(biāo)志 = 2) c, (select count(*) cnt from test where 收款標(biāo)志 = 3) d
結(jié)果:
然后你自己換點(diǎn)其他數(shù)據(jù)測試一下吧,思路就這么個(gè)思路了。