120 Groupby PPTs View free & download

Congressional Samples for Approximate Answering of GroupBy Queries PowerPoint PPT Presentation

Congressional Samples for Approximate Answering of GroupBy Queries - ... e.g., the state of California has nearly 70 times the population of Wyoming. As a result, a uniform random sample of the relation will contain ...

... e.g., the state of California has nearly 70 times the population of Wyoming. As a result, a uniform random sample of the relation will contain ...

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Generalized Hash Teams for Join and GroupBy PowerPoint PPT Presentation

Generalized Hash Teams for Join and GroupBy - Generalized Hash Teams for Joins/Grouping. False Drops Analysis ... [Graefe, Bunker, Cooper: VLDB 98] R. S. A. A. T. Result. A. A. R.A. S.A. T.A. R. A. A. S. T ...

Generalized Hash Teams for Joins/Grouping. False Drops Analysis ... [Graefe, Bunker, Cooper: VLDB 98] R. S. A. A. T. Result. A. A. R.A. S.A. T.A. R. A. A. S. T ...

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Review Report for Data Cube: A Relational Aggregation Operator Generalizing GroupBy, CrossTab, and S PowerPoint PPT Presentation

Review Report for Data Cube: A Relational Aggregation Operator Generalizing GroupBy, CrossTab, and S - Review Report for Data Cube: A Relational Aggregation Operator ... Distributive. Algebraic. Holistic. Aggregation up to 3-Dimension. example. 290. 200. 115 ...

Review Report for Data Cube: A Relational Aggregation Operator ... Distributive. Algebraic. Holistic. Aggregation up to 3-Dimension. example. 290. 200. 115 ...

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Cube Tree - Cube Tree. Dimension: number of group-by values. Relation tuples map to a point in the space ... Bottom-Up Cube (2) Starting from a bottom single dimension groupby ...

Cube Tree. Dimension: number of group-by values. Relation tuples map to a point in the space ... Bottom-Up Cube (2) Starting from a bottom single dimension groupby ...

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Enabling Innovation Inside the Network PowerPoint PPT Presentation

Enabling Innovation Inside the Network - Title: WorldNet Data Warehouse Albert Greenberg albert@research.att.com http://www.research.att.com/~albert/talks/IF-June98.html Author: Albert Greenberg

Title: WorldNet Data Warehouse Albert Greenberg albert@research.att.com http://www.research.att.com/~albert/talks/IF-June98.html Author: Albert Greenberg

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Query Optimization PowerPoint PPT Presentation

Query Optimization - Query Optimization Goal: Imperative query execution plan: Declarative SQL query buyer SELECT S.buyer FROM Purchase P, Person Q WHERE P.buyer=Q.name AND

Query Optimization Goal: Imperative query execution plan: Declarative SQL query buyer SELECT S.buyer FROM Purchase P, Person Q WHERE P.buyer=Q.name AND

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Execution Strategies for SQL Subqueries PowerPoint PPT Presentation

Execution Strategies for SQL Subqueries - Title: Orthogonal Optimization of Subqueries and Aggregation Author: cesarg Last modified by: S. Sudarshan Created Date: 5/15/2001 4:32:55 AM Document presentation format

Title: Orthogonal Optimization of Subqueries and Aggregation Author: cesarg Last modified by: S. Sudarshan Created Date: 5/15/2001 4:32:55 AM Document presentation format

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Managing XML and Semistructured Data PowerPoint PPT Presentation

Managing XML and Semistructured Data - For each author of a book by Morgan Kaufmann, list all books she published: ... ELSE $h/author /holding SORTBY (title) Existential Quantifiers. FOR $b IN //book ...

For each author of a book by Morgan Kaufmann, list all books she published: ... ELSE $h/author /holding SORTBY (title) Existential Quantifiers. FOR $b IN //book ...

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Execution Strategies for SQL Subqueries - forward lookup. reverse lookup. set oriented. semijoin. customer. orders. normalized logical tree ... Allows set-oriented and reverse lookup plan ...

forward lookup. reverse lookup. set oriented. semijoin. customer. orders. normalized logical tree ... Allows set-oriented and reverse lookup plan ...

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Web-Enabled Decision Support Systems PowerPoint PPT Presentation

Web-Enabled Decision Support Systems - ... broadly classified into three function-based categories: Select ... The upper half, called a Table Pane, displays all the fields from the desired query tables ...

... broadly classified into three function-based categories: Select ... The upper half, called a Table Pane, displays all the fields from the desired query tables ...

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XQuery to SQL by XAT PowerPoint PPT Presentation

XQuery to SQL by XAT - Implicit Naming. E.g. XPath notations. Reduce complexity of many internal variables. ... Implicit: SQL operators. Navigate. Explicit ( 'name'): Variable binding: ...

Implicit Naming. E.g. XPath notations. Reduce complexity of many internal variables. ... Implicit: SQL operators. Navigate. Explicit ( 'name'): Variable binding: ...

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Query Optimization - Query Optimization Goal: Imperative query execution plan: Declarative SQL query SELECT S.sname FROM Reserves R, Sailors S WHERE R.sid=S.sid AND R.bid=100 AND S.rating5

Query Optimization Goal: Imperative query execution plan: Declarative SQL query SELECT S.sname FROM Reserves R, Sailors S WHERE R.sid=S.sid AND R.bid=100 AND S.rating5

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Alg - Witold LITWIN Alg bre relationnelle Propos e par E. Codd, 1969 Utilis e en g n ral l'int rieur de tout SGBD relationnel Un LMD alg brique est possible, mais ...

Witold LITWIN Alg bre relationnelle Propos e par E. Codd, 1969 Utilis e en g n ral l'int rieur de tout SGBD relationnel Un LMD alg brique est possible, mais ...

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Initial QGM - Performing Feed for the topmost Box. Q1.Grade =Q2.$1. CDept= mgmt' Max. Q1. Q2. supp. took ... the topmost box into one box as every tuple in the topmost box ...

Performing Feed for the topmost Box. Q1.Grade =Q2.$1. CDept= mgmt' Max. Q1. Q2. supp. took ... the topmost box into one box as every tuple in the topmost box ...

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Processing Recursive Xquery over XML Streams: The Raindrop Approach PowerPoint PPT Presentation

Processing Recursive Xquery over XML Streams: The Raindrop Approach - ... Polytechnic Institute. XSDM ... Jack, Brooks /name /person Q1: for $a in stream('persons')//person ... Will, Brooks. 9 /name 10 /person 11 ...

... Polytechnic Institute. XSDM ... Jack, Brooks /name /person Q1: for $a in stream('persons')//person ... Will, Brooks. 9 /name 10 /person 11 ...

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SQL (almost end) PowerPoint PPT Presentation

SQL (almost end) - Title: Database Design Author: dan Last modified by: uw Created Date: 1/5/1998 10:52:07 AM Document presentation format: On-screen Show Company: uw Other titles

Title: Database Design Author: dan Last modified by: uw Created Date: 1/5/1998 10:52:07 AM Document presentation format: On-screen Show Company: uw Other titles

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Testing and Debugging (Depura PowerPoint PPT Presentation

Testing and Debugging (Depura - Title: Testing and Debugging (Depura o em Haskell) Last modified by: Marcio Ferreira da Silva Document presentation format: Apresenta o na tela

Title: Testing and Debugging (Depura o em Haskell) Last modified by: Marcio Ferreira da Silva Document presentation format: Apresenta o na tela

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??????? Sphinx-? PowerPoint PPT Presentation

??????? Sphinx-? - Title: Author: Andrew Aksyonoff Last modified by: Andrew Aksyonoff Created Date

Title: Author: Andrew Aksyonoff Last modified by: Andrew Aksyonoff Created Date

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Execution Strategies for SQL Subqueries - ... Subqueries. Mostafa Elhemali, C sar Galindo-Legaria, Torsten Grabs, Milind Joshi ... Integration of special techniques in complete system ...

... Subqueries. Mostafa Elhemali, C sar Galindo-Legaria, Torsten Grabs, Milind Joshi ... Integration of special techniques in complete system ...

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k-Means and DBSCAN PowerPoint PPT Presentation

k-Means and DBSCAN - k-Means and DBSCAN Gyozo Gidofalvi Uppsala Database Laboratory Announcements Updated material for assignment 2 on the lab course home page. Posted sign-up sheets for ...

k-Means and DBSCAN Gyozo Gidofalvi Uppsala Database Laboratory Announcements Updated material for assignment 2 on the lab course home page. Posted sign-up sheets for ...

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SQL:1999 Advanced Querying PowerPoint PPT Presentation

SQL:1999 Advanced Querying - A data warehouse archives information gathered from multiple sources, and stores ... 13 Silberschatz, Korth and Sudarshan. 22.13. Database System Concepts 4th Edition ...

A data warehouse archives information gathered from multiple sources, and stores ... 13 Silberschatz, Korth and Sudarshan. 22.13. Database System Concepts 4th Edition ...

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Clustera: A data-centric approach to scalable cluster management PowerPoint PPT Presentation

Clustera: A data-centric approach to scalable cluster management - Clustera: A data-centric approach to scalable cluster management David J. DeWitt Jeff Naughton Eric Robinson Andrew Krioukov Srinath Shankar Joshua Royalty

Clustera: A data-centric approach to scalable cluster management David J. DeWitt Jeff Naughton Eric Robinson Andrew Krioukov Srinath Shankar Joshua Royalty

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Query Optimization - Query Optimization Goal: Imperative query execution plan: Declarative SQL query buyer SELECT S.buyer FROM Purchase P, Person Q WHERE P.buyer=Q.name AND

Query Optimization Goal: Imperative query execution plan: Declarative SQL query buyer SELECT S.buyer FROM Purchase P, Person Q WHERE P.buyer=Q.name AND

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Sphinx - High-performance full-text search for MySQL Andrew Aksyonoff, shodan@shodan.ru Peter Zaitsev, pz@percona.com What s Sphinx? FOSS full-text search engine Specially ...

High-performance full-text search for MySQL Andrew Aksyonoff, shodan@shodan.ru Peter Zaitsev, pz@percona.com What s Sphinx? FOSS full-text search engine Specially ...

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HigherOrder Functions PowerPoint PPT Presentation

HigherOrder Functions - map also has a polymorphic type -- can you write it down? Quiz: What is the Type of map? ... Take elements from a list while a condition is satisfied. Specific ...

map also has a polymorphic type -- can you write it down? Quiz: What is the Type of map? ... Take elements from a list while a condition is satisfied. Specific ...

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Introduction to firewall technology PowerPoint PPT Presentation

Introduction to firewall technology - AND price AROUND 40000. AND HIGHEST(power)) CASCADE color = 'red' CASCADE LOWEST(mileage) ... P4:=LOWEST(price) P5:=NEG(color, {gray} ...

AND price AROUND 40000. AND HIGHEST(power)) CASCADE color = 'red' CASCADE LOWEST(mileage) ... P4:=LOWEST(price) P5:=NEG(color, {gray} ...

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Rewriting Nested XML Queries Using Nested Views - Rewriting Nested XML Queries Using Nested Views

Rewriting Nested XML Queries Using Nested Views

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ABAP Performance Tuning PowerPoint PPT Presentation

ABAP Performance Tuning - ABAP Performance Tuning Application Tuning 70 % (SQL, , ,JOIN,Array, ) System Tuning 20 % (OS,I/O, ,DBMS..)

ABAP Performance Tuning Application Tuning 70 % (SQL, , ,JOIN,Array, ) System Tuning 20 % (OS,I/O, ,DBMS..)

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HigherOrder Functions - What is a 'Higher Order' Function? A function which takes another function as a parameter. ... Specific to lines The property is: are not newlines. ...

What is a 'Higher Order' Function? A function which takes another function as a parameter. ... Specific to lines The property is: are not newlines. ...

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DATA WAREHOUSING AND DATA MINING PowerPoint PPT Presentation

DATA WAREHOUSING AND DATA MINING - Walmart -- 24 Terabytes. Geographic Information Systems. National Medical ... Used by people who deal with customers, products -- clerks, salespeople etc. ...

Walmart -- 24 Terabytes. Geographic Information Systems. National Medical ... Used by people who deal with customers, products -- clerks, salespeople etc. ...

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CS 103: Lecture 10 PowerPoint PPT Presentation

CS 103: Lecture 10 - ... with a supplier is a unique supplier number, a supplier name and a phone number. ... Write a query to find the names of Agents who use a Supplier named Acme ...

... with a supplier is a unique supplier number, a supplier name and a phone number. ... Write a query to find the names of Agents who use a Supplier named Acme ...

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Recent%20Advances%20in%20%20%20%20Query%20Optimization PowerPoint PPT Presentation

Recent%20Advances%20in%20%20%20%20Query%20Optimization - Hack to System R: treat predicates like joins. not an issue with Volcano ... Query sent only to relevant sites. S. Sudarshan: Recent Advances in Query Optimization ...

Hack to System R: treat predicates like joins. not an issue with Volcano ... Query sent only to relevant sites. S. Sudarshan: Recent Advances in Query Optimization ...

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NavigationDriven Evaluation of Virtual Mediated Views PowerPoint PPT Presentation

NavigationDriven Evaluation of Virtual Mediated Views - Selectivity. 2400 homes. Performance Evaluation: Construction Queries 3 beds and pool ... Selectivity. 328 homes x 122 schools. Summary & Conclusions ...

Selectivity. 2400 homes. Performance Evaluation: Construction Queries 3 beds and pool ... Selectivity. 328 homes x 122 schools. Summary & Conclusions ...

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XQuery to XAT PowerPoint PPT Presentation

XQuery to XAT - User defined function over multiple sources with multiple parameters. ... are multiplied if there are more than one results in the navigation. ...

User defined function over multiple sources with multiple parameters. ... are multiplied if there are more than one results in the navigation. ...

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Managing XML and Semistructured Data - Main issue: compose queries. Materialized XML publishing. Compute entire XML view large ! ... The composed SQL query is : Minimizing it is NP hard ! ( can be ...

Main issue: compose queries. Materialized XML publishing. Compute entire XML view large ! ... The composed SQL query is : Minimizing it is NP hard ! ( can be ...

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Low-level Analysis of Microarray Data PowerPoint PPT Presentation

Low-level Analysis of Microarray Data - the art is to find the best trade-off! X. X. X. X. X. X. X. X. X. 10. Printing / spotting. 11 ... of the unknown, but fixed amount of hybridized DNA (xc,i) ...

the art is to find the best trade-off! X. X. X. X. X. X. X. X. X. 10. Printing / spotting. 11 ... of the unknown, but fixed amount of hybridized DNA (xc,i) ...

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MonetDB: - MonetDB: A high performance database kernel for query-intensive applications Peter Boncz CWI Amsterdam The Netherlands boncz@cwi.nl Contents The Architecture of ...

MonetDB: A high performance database kernel for query-intensive applications Peter Boncz CWI Amsterdam The Netherlands boncz@cwi.nl Contents The Architecture of ...

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XML Algebra - NIAGARA. XML Query Optimization. XML Algebra. Data Model. Operator. Query Plan. Equivalent Rules ... account_number 555 777-3158 573 234 3 ... NIAGARA ...

NIAGARA. XML Query Optimization. XML Algebra. Data Model. Operator. Query Plan. Equivalent Rules ... account_number 555 777-3158 573 234 3 ... NIAGARA ...

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Sphinx - By more efficient processing (in some cases) By distributed processing on a cluster (in all) ... 7 boxes x 2 dual-core CPUs = 28 cores. Busiest known Sphinx cluster ...

By more efficient processing (in some cases) By distributed processing on a cluster (in all) ... 7 boxes x 2 dual-core CPUs = 28 cores. Busiest known Sphinx cluster ...

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TeSLa - Title: No Slide Title Author: Erik Meijer Last modified by: Erik Meijer Created Date: 3/6/1999 6:23:35 PM Document presentation format: On-screen Show

Title: No Slide Title Author: Erik Meijer Last modified by: Erik Meijer Created Date: 3/6/1999 6:23:35 PM Document presentation format: On-screen Show

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Lecture 3: SQL cont. PowerPoint PPT Presentation

Lecture 3: SQL cont. - Hint for reading the textbook: read the entire chapter 6 ! ... Gadgets $29.99. Powergizmo. GizmoWorks. Gadgets $19.99. Gizmo. Manufacturer. Category. Price. PName ...

Hint for reading the textbook: read the entire chapter 6 ! ... Gadgets $29.99. Powergizmo. GizmoWorks. Gadgets $19.99. Gizmo. Manufacturer. Category. Price. PName ...

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Fonctionnalit PowerPoint PPT Presentation

Fonctionnalit - Fonctionnalit s des SGBD Georges GARDARIN Architecture d'un SGBD 1. Description des donn es SQL DDL L'analyseur v rifie la correction des commandes Il stocke le ...

Fonctionnalit s des SGBD Georges GARDARIN Architecture d'un SGBD 1. Description des donn es SQL DDL L'analyseur v rifie la correction des commandes Il stocke le ...

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Bridging Relational Technology and XML PowerPoint PPT Presentation

Bridging Relational Technology and XML - XMLResult = ' customer id=' custId ' name ' custName ' /name accounts ... createElement(T, AL, SL) Element. createAttList(A1, ..., An) List ...

XMLResult = ' customer id=' custId ' name ' custName ' /name accounts ... createElement(T, AL, SL) Element. createAttList(A1, ..., An) List ...

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OpenERP Useability PowerPoint PPT Presentation

OpenERP Useability - OpenERP Useability Preparing v6.2 Many2Many Should be like a many2one with tags inside. Exemples: Taxes on invoice lines Will allow many2many in editable lists.

OpenERP Useability Preparing v6.2 Many2Many Should be like a many2one with tags inside. Exemples: Taxes on invoice lines Will allow many2many in editable lists.

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CSE 532-SQL-1 PowerPoint PPT Presentation

CSE 532-SQL-1 - NEXT: Using subqueries with IN, EXISTS, ANY, ALL operators. Himanshu Gupta CSE 532-SQL-* Subqueries: ... The IN Operator EXISTS Quantifiers ANY, ...

NEXT: Using subqueries with IN, EXISTS, ANY, ALL operators. Himanshu Gupta CSE 532-SQL-* Subqueries: ... The IN Operator EXISTS Quantifiers ANY, ...

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Using Visualization to Understand the Behavior of Computer Systems PowerPoint PPT Presentation

Using Visualization to Understand the Behavior of Computer Systems - User defines data ranges of interest for each component ... Processes go idle in kernel pfault/vfault calls. 40. Process Scheduling & Kernel Locks ...

User defines data ranges of interest for each component ... Processes go idle in kernel pfault/vfault calls. 40. Process Scheduling & Kernel Locks ...

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SQL - Grouping. Sometimes we want to apply aggregate functions to subgroups of tuples ... has a GROUP BY clause that allows for specific grouping of attributes ... GROUP BY Dno; ...

Grouping. Sometimes we want to apply aggregate functions to subgroups of tuples ... has a GROUP BY clause that allows for specific grouping of attributes ... GROUP BY Dno; ...

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Generating Test Data for Killing SQL Mutants: A Constraint-based Approach PowerPoint PPT Presentation

Generating Test Data for Killing SQL Mutants: A Constraint-based Approach - Generating Test Data for Killing SQL Mutants: A Constraint-based Approach Shetal Shah, S. Sudarshan, Suhas Kajbaje, Sandeep Patidar Bhanu Pratap Gupta, Devang Vira

Generating Test Data for Killing SQL Mutants: A Constraint-based Approach Shetal Shah, S. Sudarshan, Suhas Kajbaje, Sandeep Patidar Bhanu Pratap Gupta, Devang Vira

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Query Execution (end) Query Optimization PowerPoint PPT Presentation

Query Execution (end) Query Optimization - Scan one table first, then the next, eliminate duplicates. Cost: B(R) B(S) 17. Nested loop join ... Two-Pass Algorithms Based on Sorting. Join R S ...

Scan one table first, then the next, eliminate duplicates. Cost: B(R) B(S) 17. Nested loop join ... Two-Pass Algorithms Based on Sorting. Join R S ...

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Cloud Computing Systems PowerPoint PPT Presentation

Cloud Computing Systems - Cloud Computing Systems ... through channels and compose into a directed acyclic graph. ... and recovers from them Optimized for batch processing High ...

Cloud Computing Systems ... through channels and compose into a directed acyclic graph. ... and recovers from them Optimized for batch processing High ...

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Introduction To XML Algebra PowerPoint PPT Presentation

Introduction To XML Algebra - ... format is a new one method for information integration. ... Oracle; IBM; Microsoft Corp. YAT Algebra (May 2000) AT&T Algebra (June 2000) --AT&T; Bell Labs ...

... format is a new one method for information integration. ... Oracle; IBM; Microsoft Corp. YAT Algebra (May 2000) AT&T Algebra (June 2000) --AT&T; Bell Labs ...

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SQL Server 2000 Query Processing and Optimization PowerPoint PPT Presentation

SQL Server 2000 Query Processing and Optimization - Clustering columns automatically added non-clustered indices (as key/bookmark) ... Locates base table row using 'bookmark' retrieved from non-clustered index ...

Clustering columns automatically added non-clustered indices (as key/bookmark) ... Locates base table row using 'bookmark' retrieved from non-clustered index ...

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Functional Dependency Graphs and SQL PowerPoint PPT Presentation

Functional Dependency Graphs and SQL - Functional Dependency Graphs and SQL Prof. Sin-Min Lee Department of Computer Science San Jose State University Data Normalization Primarily a tool to validate and ...

Functional Dependency Graphs and SQL Prof. Sin-Min Lee Department of Computer Science San Jose State University Data Normalization Primarily a tool to validate and ...

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Database Technology PowerPoint PPT Presentation

Database Technology - Database keeps track of all transactions in an audit table. what the transaction did, and who ran it ... Take care of VIP requests. Assign priorities ...

Database keeps track of all transactions in an audit table. what the transaction did, and who ran it ... Take care of VIP requests. Assign priorities ...

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On Relational Support for XML Publishing PowerPoint PPT Presentation

On Relational Support for XML Publishing - Rapidly emerging as a standard for exchanging business data ... Performed in nested loop fashion. PGQ is evaluated on each group of tuples ...

Rapidly emerging as a standard for exchanging business data ... Performed in nested loop fashion. PGQ is evaluated on each group of tuples ...

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MonetDB: - Radix-Join (partitioned nested-loop) Partitioned Joins: Straightforward Clustering ... MonetDB Experiments: Radix-Join. MonetDB Experiments: Overall Performance ...

Radix-Join (partitioned nested-loop) Partitioned Joins: Straightforward Clustering ... MonetDB Experiments: Radix-Join. MonetDB Experiments: Overall Performance ...

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Groupby PowerPoint PPT Presentations