F. TRUYEN - Informatiekunde QBE. MS Access

Transcriptie

1 F. TRUYEN - Informatiekunde QBE MS Access

2 Maak queries via Design View

3 Voeg de tabellen toe die je wil bevragen

4 Selecteer de gewenste kolommen

5 Bekijk resultaat met View knop

6 Bekijk SQL code

7 SQL venster

8 Queries in Access Telkens wordt eerst de QBE query getoond, die je kan trachten nabootsen; Daarna komt de onderliggende vraag in SQL-taal Je kan de SQL-versie kopiëren en plakken in de Access Query editor

9 QR01 Opvragen van data: SELECT

10 Qry01 Mannen en vrouwen voor jaar 1709 SELECT YEAR, GRPCODE, MEN, WOMEN FROM Batavia WHERE YEAR = 1709 ORDER BY YEAR, GRPCODE;

11 Qr02 Comparison operators

12 Qr02 Jaar tussen 1709 en 1779 SELECT YEAR, GRPCODE, MEN, WOMEN FROM Batavia WHERE YEAR >= 1709 AND YEAR <= 1779 ORDER BY YEAR, GRPCODE;

13 Qry03 BETWEEN operator

14 Qry03 Jaar tussen 1709 en 1779 bis SELECT YEAR, GRPCODE, MEN, WOMEN FROM Batavia WHERE YEAR BETWEEN 1709 AND 1779 ORDER BY YEAR, GRPCODE;

15 Qry04 Calculated field with alias

16 Qry04 Met totaal kinderen SELECT YEAR, GRPCODE, MEN, WOMEN, SONLT14+SONGE14+DAUGLT14+DAUGGE14+C HILD As Kinderen FROM Batavia WHERE YEAR BETWEEN 1709 AND 1779 ORDER BY YEAR, GRPCODE;

17 Qry05 GROUP BY

18 Qry05 Groeperen per jaar SELECT YEAR, AVG(MEN) As GemMannen, AVG(WOMEN) As GemVrouwen FROM Batavia GROUP BY YEAR;

19 Qry06 HAVING clause

20 Qry06 Alleen gemiddelden boven 30 SELECT YEAR, AVG(MEN) As GemMannen, AVG(WOMEN) As GemVrouwen FROM Batavia GROUP BY YEAR HAVING (((Avg(Batavia.MEN))>30) AND ((Avg(Batavia.WOMEN))>30));

21 Qry07 INNER JOIN

22 Qry07 INNER JOIN

23 Qry07 INNER JOIN

24 Qry07 Query uit twee tabellen met INNER JOIN SELECT Groepen.GROEP, Sum(Batavia.Year) AS SumOfYear, Sum(Batavia.MEN) AS SumOfMEN, Sum(Batavia.WOMEN) AS SumOfWOMEN FROM Batavia INNER JOIN Groepen ON Batavia.GRPCODE = Groepen.GRPCODE GROUP BY Groepen.GROEP;

25 Qry08 RIGHT JOIN

26 Qry08 RIGHT JOIN

27 Qry08 Query uit twee tabellen met right join SELECT Groepen.GROEP, Sum(Batavia.MEN) AS SumOfMEN, Sum(Batavia.WOMEN) AS SumOfWOMEN FROM Groepen RIGHT JOIN Batavia ON Groepen.GRPCODE = Batavia.GRPCODE GROUP BY Groepen.GROEP;

28 Qry09 LEFT JOIN

29 Qry09 LEFT JOIN

30 Qry09 LEFT JOIN

31 Qry09 Query uit twee tabellen met left join SELECT Groepen.GROEP, Batavia.YEAR, Batavia.MEN, Batavia.WOMEN FROM Groepen LEFT JOIN Batavia ON Groepen.GRPCODE = Batavia.GRPCODE;

32 Qry10 Like operator

33 Qry10 Like operator met wildcard SELECT Kwartieren.QUARTER, Batavia.YEAR, Sum(Batavia.MEN) AS Mannen, Sum(Batavia.WOMEN) AS Vrouwen FROM Kwartieren LEFT JOIN Batavia ON Kwartieren.QUARTER = Batavia.QUARTER GROUP BY Kwartieren.QUARTER, Batavia.YEAR, Kwartieren.Kwartier HAVING Kwartieren.Kwartier Like "*Oost*";

34 Qry11 Crosstab Query

35 Qry11 Crosstab Query

36 Qry11 Crosstab Query

37 Qry11 Crosstab Query

38 Qry11 Crosstab Query

39 Qry11 Crosstab Query

40 Qry11 Crosstab Query

41 Qry11 Crosstab Query

42 Qry11 Crosstab Query TRANSFORM Sum(BATAVIA.MEN) AS SumOfMEN SELECT BATAVIA.YEAR, Sum(BATAVIA.MEN) AS [Total Of MEN] FROM BATAVIA GROUP BY BATAVIA.YEAR PIVOT BATAVIA.GRPCODE;

43 Qry12 Unmatched records Query

44 Qry12 Unmatched records Query

45 Qry12 Unmatched records Query

46 Qry12 Unmatched records Query

47 Qry12 Unmatched records Query

48 Qry12 Unmatched records Query

49 Qry12 Unmatched records Query

50 Qry12 Unmatched records Query

51 Qry12 Nieuwe groepen in Outercity SELECT OUTERCITY.GRPCODE FROM OUTERCITY LEFT JOIN BATAVIA ON OUTERCITY.GRPCODE = BATAVIA.GRPCODE GROUP BY OUTERCITY.GRPCODE, BATAVIA.GRPCODE HAVING (((BATAVIA.GRPCODE) Is Null));

52 Qry13 UPDATE Query

53 Qry13 Update van veld Zone UPDATE Kwartieren SET zone="oost" WHERE Kwartieren.KWARTIER LIKE "*Oost*";

54 Qry14 DELETE Query

55 Qry14 Wissen van jaar 1789 DELETE from Batavia WHERE YEAR=1789;