ѧϰ T SQL (2)
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Create database dbname On Logon...
Create table tablename (columnName type Null\Not Null, ...)...
Insert into tablename (column1, column2, ...) Values (value1, value2,...)
Select columnlist from table where ... group by... order by... computer sum...
Update set columnname=... where...
delete from tablename where...
Create view vw_name As select ...
select * from vw_name
Create Procedure sp_name As Begin ... End
Go
Exec sp_name
Go
Drop view vw_name
drop Procedure sp_name
Drop table tablename
drop database dbname
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ϵͳ»·¾³£ºWindows 7
Èí¼þ»·¾³£ºVisual C++ 2008 SP1 +SQL Server 2005
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Five basic search conditions are summarized here:
1) Comparison test
2) Range test
3) Set membership test
4) Pattern matching test (Like)
The pattern matching test checks to see whether the data value in a column matches a specified pattern
% mathes any se ......
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CREATE TABLE order_sample
(
orderid int PRIMARY KEY,
cust_id int FOREIGN KEY REFERENCES cuts_sample(cust_id) ON DELETE NO CASCADE
)
ON DELETE--ÓÃÓÚ¿ØÖƳ¢ÊÔɾ³ýÍâ¼üÏà¹ØÁªµÄÖ÷±íÖ¸ÏòÐÐʱ²ÉÈ¡µÄ²Ù×÷
-NO ACTION
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-CASCADE
ɾ³ýÍâ¼üÏà¹ØÁªµÄÖ÷±íÖ¸ÏòÐÐʱ ......
SELECT
T.ELES_FLG,
T.SENDUNIT_NAME,
T.ROM_SEQNO,
LTRIM(MAX(SYS_CONNECT_BY_PATH(T.MODEL, ',')), ',') MODEL
from (SELECT
......