mysql自定义序号_MySQL数据库之在mysql中给查询的结果添加序号列
本文主要向大家介紹了MySQL數據庫之在mysql中給查詢的結果添加序號列 ,通過具體的內容向大家展現,希望對大家學習MySQL數據庫有所幫助。
一:第一種:
select???(@i:=@i+1)???as???i,table_name.*???from???table_name,(select???@i:=0)???as???it
例如:
(1)簡單實例:select??(@i:=@i+1)??i,user_id?from??spcp_user_20170803?,(select???@i:=0)???as???it?ORDER?BY?t.user_id?desc;
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(2)復雜實例:
SELECT
(@i:=@i+1)?as?i,hs_cd,hs_owner_persons,hs_owner_certy_num,hs_full_addr,t5.value_name?as?hs_type,t6.value_name?as?hs_owner_type,hs_use_size,hs_build_size,t2.cj_num,t2.db_num,t2.high_age_num,t2.ls_person_num,t7.value_name?as?person_type,t4.org_name
FROM
house_info_20170803?t1,house_person_info_20170803?t2,person_info_20170803?t3,cmp_org?t4,cfg_value?t5,cfg_value?t6,cfg_value?t7,(select?@i:=0)?as?it
WHERE
t1.hs_owner_certy_num?IN?(
SELECT
hs_owner_certy_num
FROM
house_info_20170803
GROUP?BY
hs_owner_certy_num
HAVING
COUNT(*)?>?1
)
and?t1.hs_id=t2.hs_id
and?t2.hs_id=t3.old_hs_id
and?t1.tt_org_id=t4.org_id
and?(t1.hs_type=t5.value_cd?and?t5.item_cd=‘HS_TYPE‘)
and?(t1.hs_owner_type=t6.value_cd?and?t6.item_cd=‘HS_OWNER_TYPE‘)
and?(t3.person_type=t7.value_cd?and?t7.item_cd=‘PERSON_TYPE‘);
二、第二種:
set?@rownum=0;
select?@rownum:=@rownum+1?as?rownum,?t.*?from?table_name?t?order?by?t.id?desc?limit?10
(1)簡單實例
set?@rownum=0;
select?@rownum:=@rownum+1?as?rownum,?t.hs_id?from?house_info_20170803?t?order?by?t.hs_id?desc?limit?10
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