About us | Search

+49-(0)721-402485-12
info@parsQube.de

Your experts for XML, XQuery and XML databases

Our sister company:

Our Octopus Service:

Organizer of:

Partner event:

Follow us:

About / About us | Search

176 results:

121. XQuery | Joins | Asymmetric join notation

Asymmetric notation of a left or right outer join For the last case of the full outer join, the required XQuery query pattern is demonstrated on the example of the previous section in two…

122. XQuery | Joins | Full outer join

Formulation of a full outer join Now, the alternative asymmetric formulation of a left or right outer join shown on the previous page can be used in order to formulate a full outer join in XQuery.…

123. XQuery | Grouping & aggregation

Grouping and aggregation Apart from the joins, the groupping with subsequent aggregation represents the central type of transformations on data stocks which have to be described with the help of…

124. XQuery | Grouping & aggregation | Grouping according to structure

Grouping according to structure The first step of the grouping means that only one representative from a set of items with equal manifestations with regard to the grouping attribte is taken…

125. XQuery | Grouping & aggregation | Grouping according to equality of values

Grouping according to equality of values The second method of a grouping in XQuery is closer to the relational method to the extent that the group definition is…

126. XQuery | Grouping and aggregation | Aggregation functions

Aggregation functions In XQuery the aggregation is based on the formulation in OQL, whereby the "classic" aggregation functions fn:sum(), fn:avg(), fn:count(), fn:min()…

127. XQuery | Grouping & aggregation | Grouping via several attributes

Grouping via several attributes If facts are to be designated according to different criteria, a grouping via several attributes is required. Analogous to the relational or…

128. XQuery | Grouping & aggregation | Group filtering & sorting

Group filtering and sorting The check for existence of an item via which aggregation shall be made in order to eliminate empty grouping combinations essentially corresponds to the construct of…

129. XQuery | Grouping & aggregation | Multiple grouping

Multiple grouping The principle of the multiple grouping is applied if within a single query the original data stock shall be grouped multiple times according to different criteria. Multiple…

130. XQuery | Grouping & aggregation | Nested grouping

Nested grouping XQuery is provided with an extremely mighty feature based on the principle of the application of aggregation functions on sequences, namely the ability of the nesting with…

Search results 121 until 130 of 176

parsQube’s German government award for research and development:

Our social commitment: