If an execution plan contains only the Filter keyword, the filter condition does not hit any index. In this case, you need to check the table indexes and configure indexes again to accelerate the SQL query. Note If an execution plan contains One-Time Filter: false, the output is empty...
The format of supported transformations is the same as described in sklearn-pandas. In general, any transformations are supported as long as they operate on a single column so that it's clear they're one-to-many. Get an explanation for raw features by using a sklearn.compose.ColumnTransfor...
The example in Figure 5 displays the basic execution plan and includes information on any predicates as well as the Optimizer Cost column. SELECT plan_table_output FROM TABLE(DBMS_XPLAN.DISPLAY('plan_table',null,'basic +predicate +cost')); Figure 5: Customized BASIC plan output with selected...
Ordinary optical microscopes (light-based microscopes), like the ones you find in a school lab, are nowhere near good enough to see things in such detail. It takes a much more powerful electron microscope—using beams of electrons instead of rays of light—to take us down to nano-dimensions...
Let's examine the two key components of electric cars—the motor and the batteries—in a bit more detail and compare them with what we have in a conventional car.Photo: It's not rocket science—or is it? NASA had to use electric car technology to drive its Apollo Lunar Roving Vehicle ...
.e. the maximal simple effect of crossmodal stimuli on criterion c (congruent—incongruent), and (viii) the mean tACS effect on RT. In younger adults, we did not find significant correlations of any of these variables with DemTect. These results, however, are difficult to interpret in the...
What is the impact of an increase in the wage of workers (one of the inputs of production) on the supply curve? What are possible reasons why the supply curve of labor for any specific occupation is likely to be upward-sloping, even if, for the economy as a whole, people work fewer...
Suppose an economy produces two goods, food and machines. This economy always operates on its production possibilities frontier. Last year, it produced 50 units of food and 30 machines. This year, it is producing 55 units of food and 33 machines. Which of the following events could not expl...
I have not read all of the replies and in truth most of the detail is boring to me but it has occurred to me that with this sort of problem and since the Snowden affair, serious security devices will have to make the keyboard redundant. ...
Using this decorator function, you can extend the behavior of any function by applying the decorator to the function using the @ syntax, like this: @my_decorator def my_function(x): return x * 2 In this example, the @my_decorator syntax applies the my_decorator decorator to the my_funct...