ýˆ¡Áýˆ©`£¾¤â¤¦Ò»¶È¡¢¥¹¥¿©`¥È£Þ£¦£Þ¡¡
来源: BlogBus 原始链接: http://www.blogbus.com:80/blogbus/blog/index.php?blogid=21065& 存档链接: https://web.archive.org/web/20041220154241id_/http://www.blogbus.com:80/blogbus/blog/index.php?blogid=21065&
ýˆ¡Áýˆ©£¾¤â¤¦Ò»¶È¡¢¥¹¥¿©¥È£Þ£¦£Þ¡¡
¼¼Ðg¡¢¥¹¥¿©`¥È
Ê×Ò³
ýˆ¤ÎÐÄÇé
(3)
ýˆ¤ÎÈÕÓ›
(3)
ýˆ¤ÎÈÕÃÔ
(2)
ýˆ¤ÎÎÄÕª
(2)
ýˆ¤Î¼¼Ðg
(3)
·ÖÒ³: [1]
[2]
[3]
[4]
[5]
2004-11-22 00:35
½ñÈÕÖ®¹¤×÷
fu,µ÷ÑÐÁËÈýÖÖĿǰËùÓõÄÊý¾Ý¿âµÄÊý¾ÝÀàÐÍ->CyberMagicÊý¾Ý¶Áȡģ¿é- -
×ÊÁϲο¼
Oracle 9i Êý¾ÝÀàÐÍ
=>CSDN
SQLSERVER Êý¾ÝÀàÐÍ
=>SQLSERVER Áª»ú´ÔÊé
InterBase Êý¾ÝÀàÐÍ
=>InterBase Documentation
ÏÂÖÜÒªÕë¶ÔÆäÖÐÊý¾Ý²¿·ÖÍêÉÆÊý¾Ý´æÈ¡Ä£¿é
22ºÅ¼Ç£º¶ÔÊý¾Ý½øÐÐÁ˸ñʽ»¯ÕûÀí ^^
Ethan
@
00:35
|
ÔĶÁÈ«ÎÄ
|
ÆÀÂÛ(1)
|
ÒýÓÃTrackback(0)
|
±à¼
2004-11-22 00:21
InterBase Êý¾ÝÀàÐÍ
Êý¾ÝÀàÐÍ
Êý¾Ý³¤¶ÈºÍ±í´ï·¶Î§
˵Ã÷
BOOLEAN
•
¶¨³¤£¬
2B
• TRUE,FALSE,UNKNOWN
•
±í´ïÕæÖµ
INTEGER
SMALLINT
•
¶¨³¤
•
±í´ï·¶Î§
:
INTEGER:
-2^31 (-2,147,483,648) .. 2^31 - 1 (2,147,483,647)
SMALLINT:
-2^15 (-32,768).. 2^15 - 1 (32,767)
•
±í´ïÕûÐÍÊý¾Ý¡£
DECIMAL(P,S)
NUMERIC(P,S)
•
±ä³¤
• P:
¾«¶È£¬
118
S:
СÊýλÊý£¬
018
£¬Ð¡ÓÚ
P
•
´æ´¢Êý¾ÝÓ뾫¶ÈÓйأ¬¿ÉÒÔΪ
16
£¬
32
£¬
64
λ
•
´ø¶¨µã¾«¶ÈºÍСÊýλÊýµÄÊý¾ÝÀàÐÍ¡£
• DECIMAL(P,S)
ºÍ
NUMERIC(P,S)
¹¦ÄÜÏàͬ¡£
FLOAT
DOUBLE PRECISION
•
¶¨³¤
•
±í´ï·¶Î§
:
FLOAT: 1.175 x 10^¨C38 to 3.402 x 10^38
DOUBLE PRECISION: 2.225 x 10^¨C308 to 1.797 x 10^308
• FLOAT
´æ´¢
32
룬
DOUBLE PRECISION
´æ´¢
64
λ
•
IEEE SINGLE
¾«¶ÈΪ
7
λ¡£
•
IEEE DOUBLE
¾«¶ÈΪ
15
λ¡£
DATE
•
¶¨³¤£¬
4
¸ö×Ö½Ú
•
±í´ï·¶Î§
:
1 Jan
100 a
.d. 1 Jan
100 a
.d.to 29 Feb
32768 a
.d.
µ½
29 Feb
32768 a
.d.
•
ÒÔ
4
×Ö½Ú³¤×Ö´æ´¢¡£
TIME
•
¶¨³¤£¬
4
¸ö×Ö½Ú
•
±í´ï·¶Î§
:
0:00 AM
µ½
23:59.9999 PM
•
²»´ø·ûºÅµÄÕûÐÍ¡£
TIMESTAMP
•
¶¨³¤£¬
8
¸ö×Ö½Ú
•
±í´ï·¶Î§
:
1 Jan
100 a
.d. to 29 Feb
32768 a
.d.
•
×éºÏ
DATE
ºÍ
TIME
ÀàÐÍ¡£
CHAR(N)
Subtypes:
CHARACTER
•
¶¨³¤£¬Îª
N
¸ö×Ö½Ú
•
×î´ó¸öÊý
32767
×Ö½Ú
•
×Ö·û¼¯µÄ×Ö·û³¤¶ÈÈ·¶¨¿ÉÒÔ´æ·ÅµÄ×Ö·û×î´ó¸öÊý
•
¶¨³¤×Ö·û´®£¬
N
×Ö½Ú³¤¡£
• CHARACTER
ÊÇ
CHAR
ͬÒå´Ê¡£
VARCHAR(N)
Subtypes:
CHAR VARYING
CHARACTER VARYING
•
±ä³¤
•
×î´ó¸öÊý
32767
×Ö½Ú
•
×Ö·û¼¯µÄ×Ö·û³¤¶ÈÈ·¶¨¿ÉÒÔ´æ·ÅµÄ×Ö·û×î´ó¸öÊý
•
±ä³¤×Ö·û´®£¬
N
×Ö½Ú³¤¡£
• • CHAR VARING
ºÍ
CHARACTER VARING
ÊÇ
VARCHAR
ͬÒå´Ê¡£
Ethan
@
00:21
|
ÔĶÁÈ«ÎÄ
|
ÆÀÂÛ(0)
|
ÒýÓÃTrackback(0)
|
±à¼
2004-11-22 00:17
SQL Server Êý¾ÝÀàÐÍ
Êý¾ÝÀàÐÍ
Êý¾Ý³¤¶ÈºÍ±í´ï·¶Î§
˵Ã÷
BIGINT
INT/INTEGER
SMALLINT
TINYINT
•
¶¨³¤
•
±í´ï·¶Î§
:
BIGINT:
-2^63 (-9,223,372,036,854,775,808).. 2^63-1 (9,223,372,036,854,775,807)
INT:
-2^31 (-2,147,483,648) .. 2^31 - 1 (2,147,483,647)
SMALLINT:
-2^15 (-32,768).. 2^15 - 1 (32,767)
TINYINT:0..255
•
±í´ïÕûÐÍÊý¾Ý¡£
• INT
ºÍ
INTEGER
ÊÇͬÒå´Ê£¬ÏÔʾΪ
INT
¡£
BIT
•
¶¨³¤£¬
1
¸ö×Ö½Ú
•
±í´ï·¶Î§
:1 or 0
•
Ò»¸ö×Ö½Ú´æ´¢µÄÕûÐÎÊý¾Ý£¬Ö»ÄܵÈÓÚ
1
»ò
0
£¬¿ÉÓÃÓÚ±íʾ²¼¶ûÐÍ¡£
DECIMAL(P,S)
NUMERIC(P,S)
Subtypes:
DEC(P,S)
DEC
•
±ä³¤
• P:
¾«¶È£¬
138
S:
СÊýλÊý£¬
0P
•
´æ´¢Êý¾ÝÓ뾫¶ÈÓйØ
19
5B
1019
9B
2028
13B
2938
17B
•
´ø¶¨µã¾«¶ÈºÍСÊýλÊýµÄÊý¾ÝÀàÐÍ¡£
• DECIMAL(P,S)
ºÍ
NUMERIC(P,S)
¹¦ÄÜÏàͬ¡£
• DECIMAL(P,S)
¡¢
DEC(P,S)
ºÍ
DEC
ÊÇͬÒå´Ê£¬ÏÔʾΪ
DECIMAL
£¬
DEC=DECIMAL(18,0)
¡£
MONEY
SMALLMONEY
•
¶¨³¤
•
±í´ï·¶Î§
:
MONEY:
-2^63 (-922,337,203,685,477.5808)
.. 2^63 - 1 (+922,337,203,685,477.5807)
SMALLMOEY:
-214,748.3648 .. +214,748.3647
•
»õ±ÒÊýÖµ¡£
• MONEY
¾«È·µ½»õ±Òµ¥Î»µÄǧ·ÖÖ®Ò»£¬
SMALLMONEY
¾«È·µ½»õ±Òµ¥Î»µÄǧ·Ö֮ʮ¡£
FLOAT(N)
REAL
DOUBLE PRECISION
•
¶¨³¤
• N:
¿ÆÑ§¼ÇÊý·¨
float
ÊýβÊýµÄλÊý£¬
153
•
±í´ï·¶Î§
:
-1.79E+ 308..1.79E +308
•
´æ´¢Êý¾ÝÓë
N
£¨¾«¶È£©ÓйØ
:
123
4B
24~53
8B
•
¸¡µãÊý×ÖÊý¾ÝµÄ½üËÆÊý×ÖÊý¾ÝÀàÐÍ¡£¸¡µãÊý¾ÝΪ½üËÆÖµ£»²¢·ÇÊý¾ÝÀàÐÍ·¶Î§ÄÚµÄËùÓÐÊý¾Ý¶¼Äܾ«È·µØ±íʾ¡£
• FLOAT
ĬÈÏ
N=53
¡£
• REAL=FLOAT(23)
DOUBLE PRECISION=FLOAT(53)
¡£
• N<24
ÏÔʾΪ
REAL
£¬
N>=24
ÏÔʾΪ
FLOAT
¡£
DATETIME
SMALLDATETIME
DATETIME
•
¶¨³¤£¬
8
¸ö×Ö½Ú
•
±í´ï·¶Î§
:
1753
Äê
1
ÔÂ
1
ÈÕµ½
9999
Äê
12
ÔÂ
31
ÈÕµÄÈÕÆÚºÍʱ¼äÊý¾Ý£¬¾«È·µ½°Ù·ÖÖ®ÈýÃ루»ò
3.33
ºÁÃ룩
SMALLDATETIME
•
¶¨³¤£¬
4
¸ö×Ö½Ú
•
±í´ï·¶Î§
:
1900
Äê
1
ÔÂ
1
ÈÕµ½
2079
Äê
6
ÔÂ
6
ÈÕµÄÈÕÆÚºÍʱ¼äÊý¾Ý£¬¾«È·µ½·ÖÖÓ¡£
•
Á½¸ö
4
×Ö½ÚµÄÕûÊýÄÚ²¿´æ´¢
DATETIME
Êý¾ÝÀàÐ͵ÄÖµ¡£µÚÒ»¸ö
4
×Ö½Ú´æ´¢
base date
£¨¼´
1900
Äê
1
ÔÂ
1
ÈÕ£©Ö®Ç°»òÖ®ºóµÄÌìÊý¡£»ù´¡ÈÕÆÚÊÇϵͳ²Î¿¼ÈÕÆÚ¡£²»ÔÊÐíÔçÓÚ
1753
Äê
1
ÔÂ
1
ÈÕµÄ
DATETIME
Öµ¡£ÁíÍâÒ»¸ö
4
×Ö½Ú´æ´¢ÒÔÎçÒ¹ºóºÁÃëÊýËù´ú±íµÄÿÌìµÄʱ¼ä¡£
• SMALLDATETIME
Êý¾ÝÀàÐÍ´æ´¢ÈÕÆÚºÍÿÌìµÄʱ¼ä£¬µ«¾«È·¶ÈµÍÓÚ
DATETIME
¡£
SQL Server
½«
SMALLDATETIME
µÄÖµ´æ´¢ÎªÁ½¸ö
2
×Ö½ÚµÄÕûÊý¡£µÚÒ»¸ö
2
×Ö½Ú´æ´¢
1900
Äê
1
ÔÂ
1
ÈÕºóµÄÌìÊý¡£ÁíÍâÒ»¸ö
2
×Ö½Ú´æ´¢ÎçÒ¹ºóµÄ·ÖÖÓÊý¡£ÈÕÆÚ·¶Î§´Ó
1900
Äê
1
ÔÂ
1
ÈÕµ½
2079
Äê
6
ÔÂ
6
ÈÕ£¬¾«È·µ½·ÖÖÓ¡£
CHAR(N)
NCHAR(N)
Subtypes:
CHARACTER
NATIONAL CHAR
NATIONAL CHARACTER
•
¶¨³¤£¬Îª
N
¸ö×Ö½Ú
• CHAR
×î´ó³¤¶È
8000
×Ö½Ú
• NCHAR
×î´ó³¤¶È
4000
×Ö½Ú
•
¶¨³¤×Ö·û´®£¬
N
×Ö½Ú³¤£¬Èç¹û²»Ö¸¶¨³¤¶È£¬È±Ê¡Îª
1
¸ö×Ö½Ú³¤£¨Ò»¸öºº×ÖΪ
2
×Ö½Ú£©¡£
• NCHAR
´æ´¢
UNICODE
×Ö·û¼¯µÄ¶¨³¤×Ö·ûÐÍÊý¾Ý¡£
• CHARACTER
ÊÇ
CHAR
ͬÒå´Ê¡£
•
NATIONAL CHAR
ºÍ
NATIONAL CHARACTER
ÊÇ
NCHAR
ͬÒå´Ê¡£
VARCHAR(N)
NVARCHAR(N)
Subtypes:
CHAR VARYING
CHARACTER VARYING
NATIONAL CHAR VARYING
NATIONAL
CHARACTER VARYING
•
±ä³¤
• VARCHAR
×î´ó³¤¶È
8000
×Ö½Ú
• NVARCHAR
×î´ó³¤¶È
4000
×Ö½Ú
•
³¤¶ÈΪ
n
¸ö×ֽڵĿɱ䳤¶ÈµÄ×Ö·ûÊý¾Ý¡£
n
±ØÐëÊÇÒ»¸ö½éÓÚ
1
ºÍ
8,000
Ö®¼äµÄÊýÖµ¡£´æ´¢´óСΪÊäÈëÊý¾ÝµÄ×Ö½ÚµÄʵ¼Ê³¤¶È£¬¶ø²»ÊÇ
n
¸ö×Ö½Ú¡£ËùÊäÈëµÄÊý¾Ý×Ö·û³¤¶È¿ÉÒÔΪÁã¡£
• NVARCHAR
´æ´¢
UNICODE
×Ö·û¼¯µÄ±ä³¤×Ö·ûÐÍÊý¾Ý¡£
• CHAR VARING
ºÍ
CHARACTER VARING
ÊÇ
VARCHAR
ͬÒå´Ê¡£
• NATIONAL
CHAR VARING
ºÍ
NATIONAL CHARACTER VARING
ÊÇ
NVARCHAR
ͬÒå´Ê¡£
TEXT
NTEXT
Subtypes:
NATIONAL TEXT
•
±ä³¤
• TEXT
×î´ó³¤¶È
2
31
-1 (2,147,483,647)
¸ö×Ö·û
• NTEXT
×î´ó³¤¶È
2
30
- 1 (1,073,741,823) ¸ö×Ö·û Ethan @ 00:17 | ÔĶÁÈ«ÎÄ | ÆÀÂÛ(1) | ÒýÓÃTrackback(0) | ±à¼ ÈÕÀú 2004 Äê 12 Ô Sun Mon Tue Wen Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 ×î½ü¸üР½ñÈÕÖ®¹¤×÷ InterBase Êý¾ÝÀàÐÍ SQL Server Êý¾ÝÀàÐÍ ÆÆ±ùÖ®×÷..... Oracle Êý¾ÝÀàÐÍ Ã¿ÖÜÈȵ㡫7.14-7.21¡« Inaba Koshi no live Ò»Ìì[Ò»] µ¿ÄîKervin¾ý from wm ji°æ"ºÍÀÏ´óÔÚÒ»Æð" ×îÐÂÆÀÂÛ lakewolf : hi,Сgay¸ç . sql : ¶÷£¬¶¥Ò»Ï£¬ÕýºÃ. ryuryu : ÄãÖÕÓÚ³ÐÈÏÁË£¬ÍÞ. С¹Ë : ÍÛ¹þ¹þ£¬ÎÒϲ»¶±õ. inaba : 178 ganbatte~~~~. ´æµµ ÎÒµÄÁ´½Ó ¶«åÀ´·ç japan_idol ÈÕ¹«ÐŰñ oricon ÖíÖí piggy ʲô naniko СÉñ kami Ô¶ù yuete ÅÂÅ pastoral Ã×½ã kotomi