MSSQL ʵÏÖ MySQL µÄ limit ²éѯ·½Ê½
MSSQL ÈçºÎʵÏÖ MySQL µÄ limit ²éѯ·½Ê½
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Code:
SELECT * from
(
SELECT TOP [ÿҳ¼Ç¼]
* from
(
SELECT TOP [ÿҳ¼Ç¼*µ±Ç°Ò³Êý]
[×Ö¶Î1, ×Ö¶Î2, ...]
from [Êý¾Ý±í]
ORDER BY [ÅÅÐò×Ö¶Î]
DESC
)
[±í±ðÃû1]
ORDER BY [ÅÅÐò×Ö¶Î]
)
[±í±ðÃû2]
ORDER BY [ÅÅÐò×Ö¶Î]
DESC
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Code:
SELECT * from
(
SELECT TOP 5 * from
(
SELECT TOP 10 *
from table
ORDER BY id DESC
) t1
ORDER BY id
) t2
ORDER BY id DESC
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mysql-nt –install
net start mysql
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net stop "MySQL"
mysqld-nt.exe –remove "MySQL"
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----ͳ¼Æº¯Êý----
AVG --Ç󯽾ùÖµ
COUNT --ͳ¼ÆÊýÄ¿
MAX --Çó×î´óÖµ
MIN --Çó×îСֵ
SUM --ÇóºÍ
--AVG
use pangu
select avg(e_wage) as dept_avgWage
from employee
group by dept_id
--M ......
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