DuckDB – An in-process SQL OLAP database management system

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DuckDBisanin-processSQLOLAPdatabasemanagementsystem.Simple,feature-rich,fast&opensource.

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上一篇：Pravega – A Reliable Stream Storage System

下一篇：Life is an Adventure — Your Database Shouldn't Be - RavenDB NoSQL Database

seo综合信息

SEO信息	百度来访IP：- | 移动端来访IP：- | 出站链接：0 | 站内链接：36
IP网速：	IP地址：- 地址：- | 网速：385毫秒
ALEXA排名	世界排名：- | 预估IP：- | 预估PV：-
备案信息	- | 名称：- | 已创建：未知

收录	百度	360	搜狗	谷歌
查询	0	0	0	0

电脑关键词	手机关键词	页面友好	首页位置	索引	近期收录
0	0	电脑端优秀	-	0	0

服务器信息 协议类型 HTTP/1.1 200 OK 页面类型 text/html; charset=utf-8 服务器类型 cloudflare 程序支持 连接标识 消息发送 2024年10月7日 18时44分50秒 GZIP检测 已启用GZIP压缩 源文件大小 41.90KB 压缩后大小 7.97KB 压缩率 80.99%

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D u c k D B – A n i n p r o c e s s S Q L O L A P d a t a b a s e m a n a g e m e n t s y s t e m D o c u m e n t a t i o n G e t t i n g S t a r t e d I n s t a l l a t i o n G u i d e s D a t a I m p o r t C l i e n t A P I s S Q L I n t r o d u c t i o n W h y D u c k D B F A Q R e s o u r c e s B l o g M e d i a E v e n t s W e b s h o p G i t H u b 2 5 . 5 k S u p p o r t S u p p o r t S e a r c h S h o r t c u t c m d + k | c t r l + k D u c k D B i s a f a s t | d a t a b a s e s y s t e m Q u e r y a n d t r a n s f o r m y o u r d a t a a n y w h e r e u s i n g D u c k D B s f e a t u r e r i c h S Q L d i a l e c t I n s t a l l a t i o n D o c u m e n t a t i o n S Q L P y t h o n R J a v a N o d e . j s G e t t h e t o p 3 b u s i e s t t r a i n s t a t i o n s S E L E C T s t a t i o n _ n a m e , c o u n t ( * ) A S n u m _ s e r v i c e s F R O M t r a i n _ s e r v i c e s G R O U P B Y A L L O R D E R B Y n u m _ s e r v i c e s D E S C L I M I T 3 ; A g g r e g a t i o n q u e r y J o i n q u e r y R e a d r e m o t e C S V f i l e s R e a d r e m o t e P a r q u e t f i l e s S p a t i a l e x t e n s i o n L i v e d e m o D u c k D B a t a g l a n c e S i m p l e D u c k D B i s e a s y t o i n s t a l l a n d d e p l o y . I t h a s z e r o e x t e r n a l d e p e n d e n c i e s a n d r u n s i n p r o c e s s i n i t s h o s t a p p l i c a t i o n o r a s a s i n g l e b i n a r y . R e a d m o r e P o r t a b l e D u c k D B r u n s o n L i n u x , m a c O S , W i n d o w s , a n d a l l p o p u l a r h a r d w a r e a r c h i t e c t u r e s . I t h a s i d i o m a t i c c l i e n t A P I s f o r m a j o r p r o g r a m m i n g l a n g u a g e s . R e a d m o r e F e a t u r e r i c h D u c k D B o f f e r s a r i c h S Q L d i a l e c t . I t c a n r e a d a n d w r i t e f i l e f o r m a t s s u c h a s C S V , P a r q u e t , a n d J S O N , t o a n d f r o m t h e l o c a l f i l e s y s t e m a n d r e m o t e e n d p o i n t s s u c h a s S 3 b u c k e t s . R e a d m o r e F a s t D u c k D B r u n s a n a l y t i c a l q u e r i e s a t b l a z i n g s p e e d t h a n k s t o i t s c o l u m n a r e n g i n e , w h i c h s u p p o r t s p a r a l l e l e x e c u t i o n a n d c a n p r o c e s s l a r g e r t h a n m e m o r y w o r k l o a d s . R e a d m o r e E x t e n s i b l e D u c k D B i s e x t e n s i b l e b y t h i r d p a r t y f e a t u r e s s u c h a s n e w d a t a t y p e s , f u n c t i o n s , f i l e f o r m a t s a n d n e w S Q L s y n t a x . R e a d m o r e F r e e D u c k D B a n d i t s c o r e e x t e n s i o n s a r e o p e n s o u r c e u n d e r t h e p e r m i s s i v e M I T L i c e n s e . R e a d m o r e I n s t a l l a t i o n D u c k D B i s s e a m l e s s l y i n t e g r a t e d w i t h m a j o r p r o g r a m m i n g l a n g u a g e s . I t c a n b e i n s t a l l e d i n l e s s t h a n 2 0 s e c o n d s o n m o s t p l a t f o r m s . M o r e i n s t a l l a t i o n o p t i o n s C o m m a n d l i n e P y t h o n R J a v a N o d e . j s O D B C R u s t G o C o m m a n d L i n e P y t h o n R J a v a N o d e . j s O D B C R u s t G o b r e w i n s t a l l d u c k d b L a t e s t r e l e a s e : D u c k D B 1 . 1 . 3 | S y s t e m d e t e c t e d : p i p i n s t a l l d u c k d b i n s t a l l . p a c k a g e s ( d u c k d b ) o r g . d u c k d b d u c k d b _ j d b c 1 . 1 . 3 n p m i n s t a l l @ d u c k d b / n o d e a p i b r e w i n s t a l l d u c k d b h t t p s : / / g i t h u b . c o m / d u c k d b / d u c k d b / r e l e a s e s / d o w n l o a d / v 1 . 1 . 3 / d u c k d b _ c l i l i n u x a m d 6 4 . z i p w i n g e t i n s t a l l D u c k D B . c l i d u c k d b _ o d b c o s x u n i v e r s a l . z i p h t t p s : / / g i t h u b . c o m / d u c k d b / d u c k d b / r e l e a s e s / d o w n l o a d / v 1 . 1 . 3 / d u c k d b _ o d b c l i n u x a m d 6 4 . z i p h t t p s : / / g i t h u b . c o m / d u c k d b / d u c k d b / r e l e a s e s / d o w n l o a d / v 1 . 1 . 3 / d u c k d b _ o d b c w i n d o w s a m d 6 4 . z i p c a r g o a d d d u c k d b f e a t u r e s b u n d l e d g o g e t g i t h u b . c o m / m a r c b o e k e r / g o d u c k d b B l o g u s i n g D u c k D B D u c k D B N o d e N e o C l i e n t 2 0 2 4 1 2 1 8 J e f f R a y m a k e r s r e l e a s e 2 5 0 0 0 S t a r s o n G i t H u b 2 0 2 4 1 2 1 6 T h e D u c k D B t e a m A l l b l o g p o s t s U p c o m i n g e v e n t s 2 0 2 5 0 1 3 1 D u c k C o n D u c k C o n # 6 i n A m s t e r d a m P a k h u i s d e Z w i j g e r , A m s t e r d a m M a r k R a a s v e l d t , H a n n e s M ü h l e i s e n , G a b o r S z a r n y a s , K e l l y d e S m i t A l l e v e n t s A g g r e g a t i o n q u e r y J o i n q u e r y R e a d C S V f i l e s R e a d P a r q u e t f i l e s f r o m S 3 S p a t i a l e x t e n s i o n S Q L q u e r y P a n d a s i n t e g r a t i o n C u s t o m U D F s S Q L q u e r y d p l y r i n t e g r a t i o n S Q L q u e r y A p p e n d e r S Q L q u e r y W e b s e r v i c e i n t e g r a t i o n G e t t h e t o p 3 b u s i e s t t r a i n s t a t i o n s S E L E C T s t a t i o n _ n a m e , c o u n t ( * ) A S n u m _ s e r v i c e s F R O M t r a i n _ s e r v i c e s G R O U P B Y A L L O R D E R B Y n u m _ s e r v i c e s D E S C L I M I T 3 ; L o a d C S V f i l e t o a t a b l e . D u c k D B a u t o d e t e c t s t h e C S V s f o r m a t , c o l u m n n a m e a n d t y p e s C R E A T E T A B L E s t a t i o n s A S F R O M s 3 : / / d u c k d b b l o b s / s t a t i o n s . c s v ; D i r e c t l y q u e r y P a r q u e t f i l e i n S 3 S E L E C T s t a t i o n _ n a m e , c o u n t ( * ) A S n u m _ s e r v i c e s F R O M s 3 : / / d u c k d b b l o b s / t r a i n _ s e r v i c e s . p a r q u e t G R O U P B Y A L L O R D E R B Y n u m _ s e r v i c e s D E S C L I M I T 1 0 ; F i n d t h e t o p 3 l o n g e s t d o m e s t i c t r a i n r o u t e s S E L E C T s 1 . n a m e _ s h o r t , s 2 . n a m e _ s h o r t , d i s t a n c e s . d i s t a n c e F R O M d i s t a n c e s J O I N s t a t i o n s s 1 O N d i s t a n c e s . s t a t i o n 1 = s 1 . c o d e J O I N s t a t i o n s s 2 O N d i s t a n c e s . s t a t i o n 2 = s 2 . c o d e W H E R E s 1 . c o u n t r y = s 2 . c o u n t r y A N D s 1 . c o d e s 2 . c o d e O R D E R B Y d i s t a n c e D E S C L I M I T 3 ; W h a t a r e t h e t o p 3 c l o s e s t I n t e r c i t y s t a t i o n s u s i n g a e r i a l d i s t a n c e ? S E L E C T s 1 . n a m e _ l o n g A S s t a t i o n 1 , s 2 . n a m e _ l o n g A S s t a t i o n 2 , S T _ D i s t a n c e ( S T _ P o i n t ( s 1 . g e o _ l n g , s 1 . g e o _ l a t ) , S T _ P o i n t ( s 2 . g e o _ l n g , s 2 . g e o _ l a t ) ) * 1 1 1 _ 1 3 9 A S d i s t a n c e F R O M s t a t i o n s s 1 , s t a t i o n s s 2 W H E R E s 1 . t y p e L I K E % I n t e r c i t y % A N D s 2 . t y p e L I K E % I n t e r c i t y % A N D s 1 . i d s 2 . i d O R D E R B Y d i s t a n c e A S C L I M I T 3 ; # G e t t h e t o p 3 b u s i e s t t r a i n s t a t i o n s i m p o r t d u c k d b d u c k d b . s q l ( S E L E C T s t a t i o n , c o u n t ( * ) A S n u m _ s e r v i c e s F R O M t r a i n _ s e r v i c e s G R O U P B Y A L L O R D E R B Y n u m _ s e r v i c e s D E S C L I M I T 3 ; ) # R e a d i n g a n d w r i t i n g P a n d a s d a t a f r a m e s i m p o r t p a n d a s a s p d i m p o r t d u c k d b d f _ i n = p d . D a t a F r a m e ( ) # R u n q u e r y o n a d a t a f r a m e a n d r e t u r n a d a t a f r a m e d f _ o u t = d u c k d b . s q l ( S E L E C T s t a t i o n , s u m ( n u m _ s e r v i c e s ) F R O M d f _ i n G R O U P B Y s t a t i o n ) . t o _ d f ( ) # C r e a t e c u s t o m u s e r d e f i n e d f u n c t i o n i m p o r t d u c k d b d e f a d d _ p l u s _ o n e ( x ) : r e t u r n x + 1 c o n = d u c k d b . c o n n e c t ( ) c o n . c r e a t e _ f u n c t i o n ( a d d _ p l u s _ o n e , a d d _ p l u s _ o n e , [ B I G I N T ] , B I G I N T , t y p e = n a t i v e ) c o n . s q l ( S E L E C T s u m ( a d d _ p l u s _ o n e ( i ) ) F R O M r a n g e ( 1 0 ) t b l ( i ) ; ) # F i n d t h e l a r g e s t s e p a l s S t a t e m e n t s t = c o n n . c r e a t e S t a t e m e n t ( ) ; R e s u l t S e t r s = s t . e x e c u t e Q u e r y ( S E L E C T s t a t i o n _ n a m e , c o u n t ( * ) A S n u m _ s e r v i c e s \ \ n + F R O M t r a i n _ s e r v i c e s \ \ n + G R O U P B Y A L L \ \ n + O R D E R B Y n u m _ s e r v i c e s D E S C ; ) ; S y s t e m . o u t . p r i n t l n ( r s . n e x t ( ) ) ; / / P e r f o r m b u l k i n s e r t s u s i n g t h e A p p e n d e r A P I D u c k D B C o n n e c t i o n c o n n = ( D u c k D B C o n n e c t i o n ) D r i v e r M a n a g e r . g e t C o n n e c t i o n ( j d b c : d u c k d b : ) ; S t a t e m e n t s t = c o n n . c r e a t e S t a t e m e n t ( ) ; s t . e x e c u t e ( C R E A T E T A B L E p e r s o n ( n a m e V A R C H A R , a g e I N T ) ) ; v a r a p p e n d e r = c o n n . c r e a t e A p p e n d e r ( D u c k D B C o n n e c t i o n . D E F A U L T _ S C H E M A , p e r s o n ) ; a p p e n d e r . b e g i n R o w ( ) ; a p p e n d e r . a p p e n d ( M C D u c k y ) ; a p p e n d e r . a p p e n d ( 4 9 ) ; a p p e n d e r . e n d R o w ( ) ; a p p e n d e r . c l o s e ( ) ; / / G e t t h e t o p 3 b u s i e s t t r a i n s t a t i o n s i n M a y i m p o r t f r o m @ d u c k d b / n o d e a p i ; c o n s t i n s t a n c e = a w a i t D u c k D B I n s t a n c e . c r e a t e ( ) ; c o n s t c o n n e c t i o n = a w a i t i n s t a n c e . c o n n e c t ( ) ; c o n s t r e a d e r = a w a i t c o n n e c t i o n . r u n A n d R e a d A l l ( ` S E L E C T s t a t i o n _ n a m e , c o u n t ( * ) A S n u m _ s e r v i c e s F R O M h t t p : / / b l o b s . d u c k d b . o r g / t r a i n _ s e r v i c e s . p a r q u e t W H E R E m o n t h n a m e ( d a t e ) = M a y G R O U P B Y A L L O R D E R B Y n u m _ s e r v i c e s D E S C L I M I T 3 ; ` ) ; c o n s o l e . t a b l e ( r e a d e r . g e t R o w s ( ) ) ; / / W e b S e r v i c e I n t e g r a t i o n : / / c r e a t e e n d p o i n t t o g e n e r a t e n u m b e r s i m p o r t e x p r e s s f r o m e x p r e s s ; i m p o r t f r o m @ d u c k d b / n o d e a p i ; c o n s t a p p = e x p r e s s ( ) ; c o n s t i n s t a n c e = a w a i t D u c k D B I n s t a n c e . c r e a t e ( ) ; c o n s t c o n n e c t i o n = a w a i t i n s t a n c e . c o n n e c t ( ) ; a p p . g e t ( / g e t n u m b e r s , a s y n c ( r e q , r e s ) = > ) ; a p p . l i s t e n ( 8 0 8 2 , ( ) = > c o n s o l e . l o g ( G o t o : h t t p : / / l o c a l h o s t : 8 0 8 2 / g e t n u m b e r s ) ) ; D o c u m e n t a t i o n G e t t i n g S t a r t e d I n s t a l l a t i o n G u i d e s D a t a I m p o r t C l i e n t A P I s S Q L I n t r o d u c t i o n W h y D u c k D B F A Q R e s o u r c e s B l o g M e d i a E v e n t s W e b s h o p C o d e o f C o n d u c t T r a d e m a r k U s e S t a t u s P a g e O r g a n i z a t i o n s D u c k D B F o u n d a t i o n D u c k D B L a b s C o m m u n i t y C o m m u n i t y E x t e n s i o n s B l u e s k y L i n k e d I n X ( T w i t t e r ) D i s c o r d S t a c k O v e r f l o w © 2 0 2 5 D u c k D B F o u n d a t i o n , A m s t e r d a m N L

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