joe celkos sql puzzles answers

Ngày tải lên: 22/03/2014, 12:20

... Samet Joe Celko’s SQL for Smarties: Advanced SQL Programming, Third Edition Joe Celko Moving Objects Databases Ralf Hartmut Güting and Markus Schneider Joe Celko’s SQL Programming Style Joe Celko Data ... Jim Gray, Microsoft Research Joe Celko’s Analytics and OLAP in SQL Joe Celko Data Preparation for Data Mining Using SAS Mamdouh Refaat Querying XML: XQuery, XPath, and SQL/ XML in Context Jim Melton ... standard was SQL- 86, and the SQL- 92 standard was a design goal for the database vendors. Today, most vendors have gotten most of SQL- 92 into their products. The design goal is now the SQL- 99 standard’s...

Ngày tải lên: 21/01/2014, 08:20

... certain SQL- 92 features. Answer #2 Richard Romley once more cooked my published solution by collapsing the two SELECT statements into a CASE expression with the extrema functions in SQL- 92 ... FIND THE LAST TWO SALARIES Jack Wells sent this perplexing SQL problem in June 1996 over CompuServe. His situation is pretty typical for SQL programmers who have to work with 3GL people. The programmers ... He said “in a truly relational language it could be done, but since SQL is not relational it isn’t possible, not even with SQL- 92.” Sounds like a challenge to me! Oh, I forgot to mention an additional...

Ngày tải lên: 21/01/2014, 08:20

... NULL END) > 5) AND S1.stand_nbr = N1.stand_nbr; Answer #5 Richard Romley proposed several answers in SQL- 92 syntax in September 1997. SELECT N1.stand_name FROM (SELECT S1.stand_nbr Please purchase ... P.emp_name = C.emp_name AND P.pos = 2 WHERE C.pos = 1; Answer #8 Here is an SQL: 2003 version, with OLAP functions and SQL- 92 CASE expressions from Dieter Noeth: SELECT S1.emp_name, MAX (CASE ... need to delete Bob and Joe, but not Mark and Wayne. Answer #1 A first attempt might try to do too much work, but translating the English specification directly into SQL results in the following: DELETE...

Ngày tải lên: 21/01/2014, 08:20

... occurrences on the payroll. How would you write this query in SQL- 89? In SQL- 92? In SQL- 99? Answer #1 SQL- 89 lacks the orthogonality that SQL- 92 has, so the best way is probably to build a VIEW ... variety and not performance. Answer #1 You could use the SIGN() function in Sybase and other SQL products. This function returns -1, 0, or +1 if the argument is negative, zero, or positive, ... :my_tos ; set task code The trouble with this trick is that it might not be optimized in your SQL. This can be worse than the self-join. Answer #3 You could try using UNION ALL operators and...

Ngày tải lên: 21/01/2014, 08:20

... (&apos ;Joe& apos;, 'A', 3), (&apos ;Joe& apos;, 'A', 2), (&apos ;Joe& apos;, 'A', 3), (&apos ;Joe& apos;, 'A', 3), (&apos ;Joe& apos;, 'B', 3), (&apos ;Joe& apos;, ... BY R2.person HAVING COUNT(*) = 2; In SQL- 92, you will have no trouble putting a UNION into a VIEW, but some older SQL products may not allow it. Answer #4 SQL- 92 has a CASE expression and you ... ANSI/ISO SQL- 92 stuff than we did before. There are some really neat solutions that didn’t exist before if we learn to think in terms of the new features; the same thing applies to SQL- 99 features....

Ngày tải lên: 21/01/2014, 08:20

... exercise. Since SQL has no “ UN-COUNT(*) DE-GROUP BY ” operators, you will have to use a cursor or the vendor’s 4GL to do this. Frankly, I would do this in a report program instead of an SQL query, ... with a key. But let’s look for weird answers since this is an exercise. Answer #1 The obvious procedural way to do this would be to write a routine in your SQL s 4GL that reads a row from the ... single piece of SQL that will give him the output he wants, given the above tables? Answer #1 Bob Badour suggested that he can get the required result by creating a view in SQL- 89: CREATE VIEW...

Ngày tải lên: 21/01/2014, 08:20

... (and other versions of SQL back then) had a proprietary NUMBERS(*) function that begins at 1 and returns an incremented value for each row that calls it. The current SQL Standard now has a ... part of the official SQL- 92, so technically we should have been writing this out with integer arithmetic. But it is such a common vendor extension, and it does show up in the SQL- 99 standard, that ... name4 ============================== Al Ben Charlie David Ed Frank Greg Howard Ida Joe Ken Larry Mike NULL NULL NULL or any other number across? Can you write single SQL statements that will generate each of these results? Answer...

Ngày tải lên: 21/01/2014, 08:20

Ngày tải lên: 26/01/2014, 08:20

Ngày tải lên: 26/01/2014, 08:20

Ngày tải lên: 27/06/2014, 06:20

... InstanceName MSSQLSERVER when the default instance; otherwise, a unique name for a named instance [SetupTypeSQL-0] szDir Directory where SQL Server program files are installed [SetupTypeSQL-0] szDataDir Directory ... a new instance of SQL Server, or install Client Tools. With SQL Server 2000, you can install multiple instances of SQL Server on the same server. For more information, see SQL Server Instances ... installation CD are:  sqlins.bat Standard unattended installation  sqlins.iss Standard unattended installation settings file  sqlcli.bat Client-only unattended installation  sqlcli.iss Client-only...

Ngày tải lên: 21/12/2013, 04:18

Ngày tải lên: 31/05/2014, 01:20

Ngày tải lên: 07/08/2012, 11:48

Ngày tải lên: 07/08/2012, 11:50

Ngày tải lên: 07/08/2012, 11:56

Ngày tải lên: 07/08/2012, 11:57

Ngày tải lên: 07/08/2012, 12:00

... năng sau: + Registry SQL Server: Đăng ký các nhóm (group) để truy nhập vào Microsoft SQL Server + Edittion SQL Server Registration: Cấu hình của Microsoft SQL Server + SQL Server Query Analyzer: ... Microsoft SQL Server 7.0 Standard Edition + Microsoft SQL Server 7.0 Enterprise Edition Ngoài ra các phiên bản sau : + Microsoft SQL Server 7.0 office 2000 Edition + Microsoft SQL Server ... bạn thiết lập các ứng dụng trên SQl Server, Transact SQl là giao diện quan trọng nhất giữa SQL Server database và ứng dụng, khi đang sử dụng chơng trình Transact SQL có hai khả năng thuộc tính...

Ngày tải lên: 14/08/2012, 10:26

... SQL 19 2 Structured Query Language (SQL) 20 2.1 SQL là ngôn ngữ của cơ sở dữ liệu quan hệ 20 2.2 Vai trò của SQL 20 2.3 Giới thiệu sơ lược về Transact SQL (T -SQL) 21 2.3.1 Ngôn ngữ định nghĩa dữ ... dữ liệu. 7 Cài đặt SQL Server 2005 Express Edition: Microsoft SQL Server 2005 Express Edition là phiên bản miễn phí, dễ sử dụng và “nhẹ” của Microsoft SQL Server 2005. Microsoft SQL Server 2005 ... về SQL Server 2005 SQL Server 2005 là một hệ thống quản lý cơ sở dữ liệu (Relational Database Management System (RDBMS) ) sử dụng Transact -SQL để trao đổi dữ liệu giữa Client computer và SQL...

Ngày tải lên: 15/08/2012, 09:48