## Do I need statistics in addition to an index?

Suppose I have a table with images that are supposed to go through several steps:

Suppose I have a table with images that are supposed to go through several steps:

I’d like to monitor how many times certain queries are executed. Take a look at the 3 queries below, the second and third are written as prepared statement.

I have been doing some testing to try to better understand how SQL Server uses a histogram to estimate the number of rows that will match an equality predicate and also a < or > predicate

Index statistics are utilized by sql server to derive the best plan for query execution.

The question: I want to make stats for my website. One thing I want to do is to know how many people bookmark my website. What’s the best way to do that without a survey? The Solutions: Below are the methods you can try. The first solution is probably the best. Try others if the … Read more

I’m having trouble with calculating the median of a list of values, not the average.

I wonder whether there is a way to select the standard deviation from several integer fields in MySQL within the same row. Obviously, if I use

I like to use MySQL to do quantitative analysis and statistics.

I would like to make a MySQL user-defined function of the form:

sample_gaussian(mean, stdev) that returns a single randomized

value sampled from a gaussian distribution having mean and standard

deviation of the user-entered arguments. MySQL already has a

function rand() that returns a random number, so I just need to

know some pseudocode for constraining/transforming that value

so that it falls into the right distribution.

Any suggestions?

I’m working on some code that attempts to identify files whose contents appear to be “random”. As such, I’m looking for statistical measures that can be used to identify such randomness.