joe celkos sql puzzles and answers free download

Ngày tải lên: 27/06/2014, 06:20

Ngày tải lên: 22/03/2014, 12:20

... 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 ... 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 and Stephen ... Multidimensional and Metric Data Structures Hanan Samet Joe Celko’s SQL for Smarties: Advanced SQL Programming, Third Edition Joe Celko Moving Objects Databases Ralf Hartmut Güting and Markus Schneider Joe...

Ngày tải lên: 21/01/2014, 08:20

... exploits the NOT NULL and CHECK() constraints of the table definition and does not require any join. This illustrates the point that SQL is a combination of both DDL and DML. Please purchase ... (P0.pen_year - 4) why sooner? AND 0 < ALL (SELECT month_cnt consecutive months FROM Pensions AS P3 WHERE P3.sin = P0.sin AND P3.pen_year BETWEEN P0.pen_year AND P1.pen_year) AND 60 <= (SELECT ... product was not up to SQL- 92 standards at the time (i.e., no proper OUTER JOINs, no general scalar subexpressions, and so on), so his query has to run under the old SQL- 89 rules. Assume that...

Ngày tải lên: 21/01/2014, 08:20

... MagazineSales(stand_name, title, net_sold_qty) AS SELECT Sales.stand_name, Titles.title, net_sold_qty FROM Titles, Sales, Newsstands WHERE Sales.stand_nbr = Newsstands.stand_nbr AND Titles.product_id ... correlation per skill CandidateSkills AS C2, CandidateSkills AS C3 WHERE C1.candidate_id = C2.candidate_id AND C1.candidate_id = C3.candidate_id AND job order expression created here Please ... 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...

Ngày tải lên: 21/01/2014, 08:20

... common check amount and the number of 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 ... (0, 0, 0, 0, 0, 0, 0, 0, 0, f10)) AND (f1 + f2 + f10) > 0; In SQL- 92, you can use row and table constructors in comparison predicates. The IN predicate expands into a sequence of OR-ed equality ... Kuznetsov realized that we need both answers (for those who ordered all products and for those who did not order all products), and we can get them in one query—simpler and better performing than issuing...

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;, ... C1.emp_id = B1.emp_id AND C1.emp_id = H1.emp_id AND bill_date = (SELECT MAX(bill_date) FROM Billings AS B2 WHERE B2.emp_id = C1.emp_id AND B2.bill_date <= H1.work_date) AND H1.work_date ... E7.i) = 28 AND E1.i NOT IN (E2.i, E3.i, E4.i, E5.i, E6.i, E7.i) AND E2.i NOT IN (E1.i, E3.i, E4.i, E5.i, E6.i, E7.i) AND E3.i NOT IN (E1.i, E2.i, E4.i, E5.i, E6.i, E7.i) AND E4.i NOT IN...

Ngày tải lên: 21/01/2014, 08:20

... boss comes in and wants to know the average number of widgets produced in all batches by date and production center. You say “No problem” and do it. The next day your boss comes back and wants ... P2.production_center AND P1.wk_date = P2.wk_date) AND batch_nbr <= (SELECT 2 * MAX(batch_nbr)/3 FROM Production AS P2 WHERE P1.production_center = P2.production_center AND P1.wk_date = ... 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 Inventory table, and then...

Ngày tải lên: 21/01/2014, 08:20

... WATCOM (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 ... T2.end_date AND NOT EXISTS (SELECT * FROM Timesheets AS T3, Timesheets AS T4 WHERE T3.end_date < T4.start_date AND T3.start_date >= T1.start_date AND T3.end_date <= T2.end_date AND T4.start_date ... 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...

Ngày tải lên: 21/01/2014, 08:20

... (W2.receipt_nbr, W3.receipt_nbr) AND W2.receipt_nbr NOT IN (W1.receipt_nbr, W3.receipt_nbr) AND W1.qty_on_hand >= W2.qty_on_hand AND W2.qty_on_hand >= W3.qty_on_hand; Now you need a procedure ... FROM Husbands AS W, Husbands AS X, Wives AS Y, Wives AS Z WHERE W.man = X.man AND W.ranking > X.ranking AND X.woman = Y.woman AND Y.woman = Z.woman AND Y.ranking > Z.ranking AND Z.man ... 'xxxxxx' AND f2.empl_id = 'xxxxxx' AND f3.empl_id = 'xxxxxx' AND F1.empl_rcd = 0 AND F1.pin_nbr = '52636' AND f2.pin_nbr = '52751' AND f3.pin_nbr...

Ngày tải lên: 26/01/2014, 08:20

Ngày tải lên: 26/01/2014, 08:20

... Questions and Answers Written by Administrator Thursday, 11 March 2010 11:39 24. Why do you think you would do well at this job? Give several reasons and include skills, experience and interest. 25. ... able to be productive? and What type of projects will I be able to assist on? are examples. And Finally Good Luck : Shared by Vishnu 6 / 6 50 Common Interview Questions and Answers Written by Administrator Thursday, ... yourself successful? You should always answer yes and briefly explain why. A good explanation is that you have set goals, and you have met some and are on track to achieve the others. 5. What do...

Ngày tải lên: 07/02/2013, 09:37

... and overlooking it would set a bad precedent. I would try again and again and again, in whatever way I could, to solve the problem, involving wider and wider circles of people, both above and ... subject to the laws of supply and demand. So overqualified can be a relative term, depending on how tight the job market is. And right now, its very tight. I understand and accept that. I also believe ... describe your own firing candidly, succinctly and without a trace of bitterness from the companys point-of-view, indicating that you could understand why it happened and you might have made the...

Ngày tải lên: 07/02/2013, 09:37

Ngày tải lên: 14/09/2013, 19:58

... sprite for answers, get correct answer, and shuffle all correctAnswer = dataXML.item[questionNum] .answers. answer[0]; answers = shuffleAnswers(dataXML.item[questionNum] .answers) ; The answers are ... list at a time and placing it in an array. It then returns this randomly sorted array of answers: // take all the answers and shuffle them into an array public function shuffleAnswers (answers: XMLList) ... sure the questions and answers are clear and fair. You can modify this game to have fewer or more answers relatively easy. If you want, you can have just two answers, such as True and False. Rarely...

Ngày tải lên: 29/09/2013, 20:20

... in an increase of the thoughtfulness, the depth, and the honesty of the answers you receive. Speaking of answers, be prepared to listen and to get some answers you’re not happy to hear. The truth, ... listen, and thank the answerer for their perspective. XVIII PREFACE You ask questions and pretty soon, you come up with answers. —Theodore Leavitt, American marketing guru The Power and Problem ... customers this question and those that follow gets you immediate feedback and insight into your future. Some of the answers might make you uncomfortable; all of them will provide you and your organization...

Ngày tải lên: 16/10/2013, 02:15

... privileges, datatypes, RMAN keywords, SQL keywords, SQL* Plus or utility commands, packages and methods, as well as system-supplied column names, database objects and structures, user names, and roles. You can specify ... names, packages and classes, user names and roles, program units, and parameter values. Enter sqlplus to open SQL* Plus. The password is specified in the orapwd file. Back up the datafiles and control ... contain global variables and cursors that are available to all procedures and functions in the package. Package Components PL /SQL packages have two parts: the specification and the body, although sometimes...

Ngày tải lên: 24/10/2013, 17:15

Ngày tải lên: 27/12/2013, 15:30

Ngày tải lên: 27/12/2013, 15:30