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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
ÉÏÃæµÄ´úÂë±íʾ´Ó table ±íÖлñÈ¡¼Ç¼£¬Ã¿Ò³5Ìõ¼Ç¼£¬µ±Ç°ÊǵڶþÒ³5*2=10£¬½á¹û°´ÕÕ id µ¹ÐòÅÅÁС£


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Ê×ÏÈÊǰ²×°mysql·þÎñ:
mysql-nt –install
net start  mysql
µ±È»Ó´ÔÚbinĿ¼ÔËÐÐÕâ¸öÃüÁîÁË
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net stop "MySQL"
mysqld-nt.exe –remove "MySQL"
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mysql ³£Óú¯Êý

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1.CONCAT(str1,str2,...)
mysql> ? concat;
mysql> SELECT CONCAT('My', 'S', 'QL');
+-------------------------+
| CONCAT('My', 'S', 'QL') |
+-------------------------+
| MySQL        ......

mysqlÖÐGROUP BY½áºÏGROUP_CONCATµÄʹÓà [ת]

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select
 columnA,columnB 
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group
 
by
 columnA,columnB  
select columnA,columnB from table group by columnA,colum ......

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mysql_affected_rows -- È¡µÃǰһ´Î MySQL ²Ù×÷ËùÓ°ÏìµÄ¼Ç¼ÐÐÊý
mysql_change_user --  ¸Ä±ä»î¶¯Á¬½ÓÖеǼµÄÓû§
mysql_client_encoding -- ·µ»Ø×Ö·û¼¯µÄÃû³Æ
mysql_close -- ¹Ø±Õ MySQL Á¬½Ó
mysql_connect -- ´ò¿ªÒ»¸öµ½ MySQL ·þÎñÆ÷µÄÁ¬½Ó
mysql_c ......
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