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select * into newtable form oldtable;°Ñoldtabel¸´ÖƵ½newtableÇÒnewtable²»´æÔÚ,·ñÔò³ö´í.;
insert into newtable select * from oldtable°ÑoldtableµÄÄÚÈݲåÈëµ½newtable, newtableÒ»¶¨Òª´æÔÚ,²Å¿ÉÒÔ¸´ÖÆ.


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SQL¸ß¼¶Ó¦Óà Garin Zhang

×·¼Ó£ºrow_number, rank, dese_rank, ntile
1. row_number: Ϊ²éѯ³öÀ´µÄÿһÐмǼÉú³ÉÒ»¸öÐòºÅ¡£
SELECT row_number() OVER(ORDER BY field) AS row_n
from tablename;
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with t_towtable
as (select row_number over(order by field1) as row_number from tb)
select * from t_rowtable where row_numbe ......

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µÚËIJ¿Öؽ¨Óû§¼´¿É
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¶ ......

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--ºÏ²¢ÐУ¬²¢·µ»ØºÏ²¢µÄÖµ
Create proc [dbo].[proUniteRow]
@tab varchar(30),           --±íÃû
@col varchar(30),           --ºÏ²¢µÄÁÐÃû
@where varchar(2000),     &nbs ......

SQL ÕÒ³ö¶à¸ö×Ö¶ÎÂú×ãÆäÖÐÒ»¸ö×ֶεÄÐÂд·¨

ÕÒ³öTABLE1ÖÐ
Column1 Âú×ãvalue1
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Column2 Âú×ãvalue2
»òÕß
Column3 Âú×ãvalue3
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SELECT top 10 * from TABLE1
WHERE
CASE WHEN COLUMN1='value1' THEN 1
ELSE
(CASE WHEN COLUMN2='value2' THEN 1
ELSE
(CASE WHEN COLUMN3=value3 THEN 1 ELSE 0 END)
END)
END =1 ......
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