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SQL code:
CREATE TABLE TUser
(
FName CHAR(8000),
FAge INT,
FSex bit
)
INSERT INTO TUser
SELECT 'ÕÅÈý',18,1
UNION ALL
SELECT 'ÀîËÄ',20,1
UNION ALL
SELECT 'ÍõÎå',32,1
UNION ALL
SELECT 'Âé×Ó',23,1
²é¿´IOʹÓÃÇé¿ö
SQL code:
SET STATISTICS IO ON
SELECT * from TUser
(4 ÐÐÊÜÓ°Ïì)
±í 'TUser'¡£É¨Ãè¼ÆÊý 1£¬Âß¼¶ÁÈ¡ 4 ´Î£¬ÎïÀí¶ÁÈ¡ 0 ´Î£¬Ô¤¶Á 0 ´Î£¬lob Âß¼¶ÁÈ¡ 0 ´Î£¬lob ÎïÀí¶ÁÈ¡ 0 ´Î£¬lob Ô¤¶Á 0 ´Î¡£
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SQL code:
EXEC sp_spaceused N'TUser'
dateΪ32K index_size Ϊ8k
µ«ÎÒ¶¼Ã»½¨Á¢Ë÷Òý,Ϊʲô»áÏÈ·ÖÅä8k
ÎÒÓÖ½¨Á¢Ë÷Òý
SQL code:
CREATE INDEX idx_age ON TUser(FAge)
È»ºóÔٲ鿴index_sizeΪ24K
ʹÓÃÏÂÃæ²éѯ£¬ÎÒ¿´ÁËÖ´ÐÐûÓÐÀûÓÃË÷ÒýɨÃè,ÊDZíɨÃè
SQL code:
SELECT * from TUser WHERE FAge=20
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SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
ALTER PROCEDURE tp_Fetch_List(
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