1. The optimizer takes account of these changes and selects the optimal access plan when the job is executed.

2. Indeed, from the basic statistics, the DB2 optimizer can only estimate the frequency of 'VALUE_Z' in COLUMN_Y.

3. The IXAND access request element directs the optimizer to use index anding to access a table.

4. The optimizer will deduce key value selection based on the functional dependency of the column within the row.

5. To do this, the optimizer uses the RTL to create fast or more compact code (or both, when possible).

6. DB2's optimizer is the component that accomplishes this physical data independence.

7. For SQL statements with variables, the optimizer uses a default filter factor to determine the best access path at bind time.

8. If value is set to 2, the optimizer would uses estimated costs to determine an execution plan regardless of the transaction isolation mode.

9. Bugfix related to frequency selection box on Optimizer form (F12).

10. Note: The query optimizer considers using a functional index when the index expression is used in a relational expression or as an argument to one of the operator class functions.

11. Bitmap indexes are integrated with the Oracle optimizer and execution engine.

12. Conflicting statistics: Inconsistent statistics may cause the optimizer to derive the wrong estimated costs and to make the wrong decision on access plan assessment.

13. With the hilo optimizer, your sequence can't be used by other applications unless they also employ the same logic as in Hibernate.

14. Note: Since statistics impact the optimizer, you are advised to set STATCHANGE to a reasonable value so that queries continue to return in optimum fashion.

15. Rebind applications that use static SQL after using RUNSTATS so that the query optimizer can choose the best access plan given the new statistics.

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16. Without column data-value distribution information in the catalog, DB2 will assume an even distribution of values, which may lead the optimizer to a sub-optimal access path.

17. Another primary module of the overall design is an optimizer module.

18. These views include columns containing statistical information that is useful to the query optimizer.

19. Inspect the optimized SQL in the db2exfmt or Visual Explain output, as this is the basis for the planning decision of the relational data source push-down analysis and the query optimizer.

20. I've set up the subject player using the THX optimizer test patterns for contrast and grey scale.

21. In MPP, the opt_buffpage is calculated per node, as the optimizer uses the total buffer pool information for the node on which the query is running.

22. The result of this comparison can potentially point to out-of-date statistics — for example, used by the optimizer to select an incorrect access plan.

23. In the figure below, asynchrony has been enabled, and the optimizer has chosen to place an ATQ operator above the rightmost (pink) SHIP.

24. If the transaction isolation mode is Repeatable Read, then the optimizer would base its choice purely on the estimated costs.

25. The experimental results using the testing functions showed that the new algorithm is able to search the global optimizer and avoiding the premature convergence on the multidimensional variable space.

26. To take advantage of the increased buffer pool, you must rebind the applications for the optimizer to consider the buffer pool size when deciding its access strategy.

27. The script engine has some components, include symbol table, lexical analyzer, parser, semantic checker, intermediate code generator, optimizer, code generator, virtual machine.

28. If the SQL statement is badly coded, it is difficult for the optimizer to transform the query, leaving fewer options available for choosing an optimal access path.

29. In general, the basic statistics available to the DB2 optimizer does not detect data correlation.

30. The IBM XL C compiler is a very good optimizer, and as a result, the C algorithm delivers superior results to a simple unoptimized assembly language implementation.

31. As you've seen in the steps above, the optimizer selects the optimal access plan based on available statistics.

32. The estimated costs are cost units that the optimizer uses to compare query plans.

33. Another benefit of the move to DB2 9 is the hybrid storage engine and a query optimizer that "understands" XML (mapping to relational algebra for queries involving XML).

34. Programmers can work transparently with data from these various sources, relying on DB2 II's global query optimizer to select an efficient data access strategy for such work.

35. Access plan describes the access path that the DB2 optimizer has chosen for accessing data for an SQL statement.

36. This registry variable causes the optimizer to favor nested loop joins to join the list of values, using the table that contributes the IN list as the inner table in the join.

37. Unlike other heart-failure devices, the Optimizer works by strengthening the pumping force of the heart.

38. WebSphere Federation Server uses its cost based optimizer in order to determine the optimal access path to retrieve and process the data.

39. When the index name is not specified, optimizer picks the cheapest single XML index access plan.

40. The solution, based on ABB's industry-leading Expert Optimizer? process optimization system, was installed in the kiln and cooler sections of Holcim's Ternate cement plant in northern Italy.

41. At times, semantically equivalent code, written in two different ways, might cause the optimizer to have a more difficult time performing good register allocation.

42. The optimizer removed an inline function that is not called.

43. So multimodal problems has turn into unimodal problems in some clusters in which the optimal solution is guaranteedly located through the guaranteed convergence particle swarm optimizer.

44. Aiming at how the DBMS query optimizer to generate the smallest cost query plan, optimization rules of the relational algebra expression are given.

45. When a query references a function template(/optimizer.html), the query optimizer tries to generate a feasible plan that allows this function reference to be evaluated on the remote data source.

46. When the IN predicate is used in its join form, the optimizer still considers it for statistical correlation detection.

47. Print Standardizer is using TVI method to compensate the variation, in their early version, they even integrate their PDF Standardizer and CMYK Optimizer in the Print Standardizer workflow.

48. The optimizer considers using multi-column statistics to detect a statistical correlation and estimate more accurately the combined filtering effect of multiple predicates.

49. IBM does not publish the actual, in-depth details of how the optimizer determines the best access path, but the optimizer is a cost-based optimizer.

50. In general, a nested loop join with sort composite is favored by the optimizer if the inner index is well-clustered and the inner table is expected to be probed many times.

51. The query optimizer will give priority to an execution plan involving an MQT over a plan that involves access to remote tables.

52. Although the DB2 optimizer is helpful for selecting the best access path, the result depends on the input data, which is often not accessed or controlled by the optimizer.

53. The application compared the classification results of ABC fuzzy classification with fuzzy classification, the traditional ABC classification and the linear optimizer.

54. This high performance, single window scanner leverages the patented optimizer to convert the scanner from the horizontal to the vertical position with just the flip of a switch.

55. First analyze the access plan that the optimizer chooses when no distribution statistics are available, which is only basic statistics for the table CARS, and that its indexes exist.

56. As you can see, the optimizer creates a virtual table to process the IN-list sub-query.

57. The push-down decision is made by the wrapper during the planning phase, while working with the query optimizer.

58. This is one of the optimization that opcode optimized like Zend's PHP optimizer.

59. The optimizer chooses the best number of push-downs based on cost estimation, such that the work required to perform push-down does not outweigh the benefit for applying the push-down filter.

60. The optimizer transparently rewrites the request to use the materialized view.

61. Before access path selection, the DB2 optimizer transforms SQL statements into forms that are semantically identical, such as by using predicate pushdown or predicate transitive closure.

62. So how optimizer work out the cardinality with range filter in TABLE JOIN?

63. A recent enhancement to DB2 for i 6.1 makes it possible to understand the optimizer use at the SQL statement level within the SQL Performance Monitor.

64. Join plan directives that force optimizer to use the designated join method to join tables in the query, either nested loop join, sort merge join, or dynamic hash join.