The technology which produces good quality organic manure by the use of suitable earthworm species from the waste material. It has 3 important components Vermiculture, Vermicomposting, Vermiconservation.
This is for particularly for students who are looking for Biofertilizer notes for study. Biofertilizer is a substance which contains living microorganisms. Different types of biofertilizers like Rhizobium, Phosphate solubilizing microorganisms(PSM), Silicate solubilizing bacteria and Rhizobium are used as an example. It also contains its use on soil fertility and on agriculture.
In Teradata Coalesce function returns NULL if all its arguments evaluate to null. Otherwise, it returns the value of the first non-null argument in the scalar_expression list.
In Teradata using case statement, you can specify an alternative value for a conditional expression based on the equality comparison that evaluates to true. Basically you represent some data based on different conditions.
Teradata sum returns a column value that is the arithmetic sum of value_expression.
To get sum over partition by Teradata you can use the aggregate function SUM and PARTITION BY on a required column.
Teradata skew function returns the skewness of the distribution of value_expression.
In Teradata MIN function is used to get minimum value for a value_expression.
In Teradata Max function is used to get maximum value for a value_expression.
In Teradata having clause is a conditional expression that must be satisfied for a group of rows to be included in the result data.