各種數(shù)據(jù)庫如何讀取前N條記錄
1. ORACLE
Select * FROM TABLE1 Where ROWNUM<=N
2. INFORMIX
Select FIRST N * FROM TABLE1 where 1=1
3. MYSQL
Select * FROM TABLE1 where 1=1 LIMIT N
(以上三種是俺工作中用到的數(shù)據(jù)庫)
4. DB2
Select * ROW_NUMBER() OVER(ORDER BY COL1 DESC) AS ROWNUM Where ROWNUM<=N
或者
Select COLUMN FROM TABLE where 1=1 FETCH FIRST N ROWS ONLY
5. SQL SERVER
Select TOP N * FROM TABLE1 where 1=1
or
SET ROWCOUNT N Select * FROM TABLE1 where 1=1 SET ROWCOUNT N1
6. SYBASE
SET ROWCOUNT N Select * FROM TABLE1 where 1=1 SET ROWCOUNT N1
7. FOXPRO
Select * TOP N FROM TABLE orDER BY COLUMN
8. ACCESS
Select TOP N * FROM TABLE1 where 1=1