Variance

Table of Contents



Returns the population variance of the values in each group: how far the values are spread from their mean.

Numeric Variance(AggregationArray valuesArray)

round-pushpin Groups the synonyms by source word and computes Variance of the target word ids.
SELECT
    SourceWordId,
    Variance(TargetWordId) as Result
FROM
    WordList:Synonym
GROUP BY
    SourceWordId




SQL :: Max
Returns the largest numeric value in each group. Use MaxString for text.
SQL :: MaxString
Returns the alphabetically largest value in each group.
SQL :: Mean
Returns the arithmetic mean of the values in each group (the same as Avg).
SQL :: Median
Returns the median (middle) value in each group. For an even number of values it is the average of the two middle values.
SQL :: Min
Returns the smallest numeric value in each group. Use MinString for text.
SQL :: MinString
Returns the alphabetically smallest value in each group.
SQL :: Mode
Returns the value that occurs most often in each group. When several values are tied, the first one encountered is returned.
SQL :: Order By
Order by sorts a result set by a given set of fields or expressions.
SQL :: Select
Select statements are used to read (or query) data from the database.
SQL :: Sha1Agg
Returns a single SHA-1 hash of all of the values in each group, as a lower case hex string. Useful for detecting changes to a set of documents.