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A collection of QlikView tips and tricks from the Qlik Community. The required attribution and source has been provided in the document. This document has about 90+ tips, tricks and solutions for common qlikview challenges.
TekAcademyLabs.com
QlikView Tips and Tricks
June 9
2014QlikView tips and tricks is the document in which content is aggregated from the qlik community. The appropriate source of the content is also mentioned to avoid plagiarism.
http://tekacademylabs.com/
Contents 1. Load XML field from database (Oracle) ............................................................................................. 3
2. Hash functions and Collisions ............................................................................................................. 4
Hash functions.................................................................................................................................... 4
Hash functions in QlikView ................................................................................................................. 5
Detecting changed records ................................................................................................................... 5
Hash collisions ................................................................................................................................... 6
The birthday problem .......................................................................................................................... 7
Calculating the probability of a hash collision .......................................................................................... 7
3. Autonumber Vs AutonumberHash Vs Autonumberhash128 ............................................................. 9
4. Loosely coupled tables ...................................................................................................................... 10
5. Circular References ........................................................................................................................... 11
6. Incremental Load .............................................................................................................................. 14
7. Three types of Incremental Load ...................................................................................................... 17
8. Qlikview Associative data model ...................................................................................................... 20
9. The magic of variables ...................................................................................................................... 21
10. The QlikView Cache......................................................................................................................... 25
11. Null handling in QlikView ................................................................................................................ 27
12. Text searches .................................................................................................................................. 27
13. Automatic Number interpretation .................................................................................................. 30
15. Colors in Chart ................................................................................................................................. 35
16. Aggregations and Function Classes ................................................................................................ 38
17. Its all Aggregations ........................................................................................................................ 40
18. Dimensions and Measures ............................................................................................................. 42
19. Qlikview Quoteology ...................................................................................................................... 45
20. The Crosstable Load ....................................................................................................................... 47
21. On Boolean fields and functions ..................................................................................................... 49
22. The Dual() function ........................................................................................................................ 52
23. A primer on Section Access ............................................................................................................. 56
24. Data reduction using multiple fields .............................................................................................. 58
25. Color, state and vectors .................................................................................................................. 61
26. Handling multiple languages .......................................................................................................... 62
27. Dynamically selecting timeframes ................................................................................................. 65
28. The Only() function ......................................................................................................................... 67
29. AND and OR .................................................................................................................................... 69
30. To JOIN or not to JOIN..................................................................................................................... 71
31. Canonical Date ................................................................................................................................ 73
32. Linking to two or more dates .......................................................................................................... 77
33. IntervalMatch and Slowly Changing Dimension ............................................................................ 78
34. The Calculation engine ................................................................................................................... 78
35. Symbol Tables and Bit stuffed pointers .......................................................................................... 80
36. Basics for Complex authorization .................................................................................................. 82
37. Generic Keys .................................................................................................................................... 83
38. Generate missing data in QlikView ................................................................................................ 84
39. Strategies for creating key tables ................................................................................................... 85
40. Recipe for a Gantt chart .................................................................................................................. 86
41. Relative Calendar Fields ................................................................................................................. 87
42. Master Calendar .............................................................................................................................. 90
43. Year Over Year Comparisons........................................................................................................... 91
44. Redefining the week numbers ........................................................................................................ 94
45. Preceding Load ................................................................................................................................ 97
46. Macros are BAD .............................................................................................................................. 99
47. Recipe for Pareto Analysis ............................................................................................................ 101
48. Monte Carlo Methods .................................................................................................................. 104
49. A myth about COUNT distinct ....................................................................................................... 107
50. Unbalanced n level hierarchies ................................................................................................... 110
51. Hierarchies .................................................................................................................................... 113
52. Loops in the Script ......................................................................................................................... 114
53. IntervalMatch ................................................................................................................................ 117
54. Counters in the Load ..................................................................................................................... 119
55. Synthetic Keys ............................................................................................................................... 121
56. Data types in QlikView .................................................................................................................. 124
57. The nature of Dual flags ................................................................................................................ 126
58. Dont Join use ApplyMap instead ................................................................................................ 128
59. Slowly Changing Dimension ...............................................................................
