SQL如果記錄重復，請選擇具有最大ID的記錄

Question

我有一個查詢返回一些記錄的舊版本（由於數據庫設計不好），我試圖只獲得最新的。 所以我試着用Max Id的那些，但查詢很復雜，並且有很多記錄。 所以這樣的subselect查詢不會起作用：

SELECT row 
FROM table 
WHERE id=(
    SELECT max(id) FROM table
    )

這是我的疑問。 順便說一下，我的公司正在使用Testlink，如果您熟悉它並且您有更好的解決方案，那么我們將不勝感激。

SELECT req_doc_id, scope,nh.parent_id,nh.id
FROM (SELECT nh.id, req_doc_id,doc_id FROM nodes_hierarchy nh,
req_specs r1, requirements r2 
WHERE nh.parent_id = r1.id AND nh.id = r2.id 
AND (r1.doc_id LIKE '%BlaBla%' OR r1.doc_id LIKE '%Tralala%')) 
AS t1, nodes_hierarchy nh, req_versions r1 
WHERE t1.id = nh.parent_id AND nh.id = r1.id

結果集是

 NAME..................ID              
____

BlaBla1..............163        

BlaBla1..............190

BlaBla2..............173

Tralala..............15

Tralala2.............26

Tralala2.............19

我想要的是：

 NAME..................ID              
____


BlaBla1..............190

BlaBla2..............173

Tralala..............15

Tralala2.............26

Answer 1

SELECT TB.NAME,TB.ID FROM TABLE TB
INNER JOIN
(
   SELECT NAME,MAX(ID) ID FROM TABLE GROUP BY NAME
)INNERTABLE ON INNERTABLE.ID=TB.ID

嘗試以上查詢。

Answer 2

干得好：

 SELECT Name,Notes
 FROM (select nh.id ,req_doc_id as Name, scope as Notes  from 
 (select nh.id,req_doc_id,doc_id  from nodes_hierarchy nh ,
 req_specs r1, requirements r2 
 where nh.parent_id = r1.id  and nh.id = r2.id 
 and ( r1.doc_id like '%Tralala%'
 or r1.doc_id like '%BlaBla' ) )    

 as t1,
 nodes_hierarchy nh, req_versions r1 
 where t1.id = nh.parent_id  and nh.id = r1.id ) AS TABLO
 INNER JOIN(
 SELECT MAX(nh.id) ID ,scope FROM  (select nh.id,req_doc_id,doc_id  from nodes_hierarchy nh ,
 req_specs r1, requirements r2 
 where nh.parent_id = r1.id  and nh.id = r2.id 
 and (r1.doc_id like '%Tralala%'
 or r1.doc_id like '%BlaBla' ) )  

 as t1, nodes_hierarchy nh, req_versions r1 where t1.id = nh.parent_id  and nh.id = r1.id GROUP BY req_doc_id)
 INNERTABLE on INNERTABLE.ID = TABLO.ID;