1. A computer program product comprising a non-transitory machine-readable storage medium storing instructions that, when executed by at least one programmable processor, cause the at least one programmable processor to perform operations comprising: receiving, at a dynamic split node defined within a calculation model of a database management system in a multi-node data partitioning landscape that comprises a master node and a plurality of processing nodes, data as an intermediate result of an earlier operation in a calculation plan or data from one or more tables upon which the calculation plan is currently operating in response to a query, wherein the plurality of processing nodes are being controlled by the master node, wherein the calculation plan is generated by the calculation model with sequence of execution operations tailored to the query; applying, at the dynamic split node, a partitioning specification to one or more reference columns in a table that includes a plurality of records containing the received data; splitting, at the dynamic split node, the table for handling by a plurality of processing paths according to the partitioning specification, wherein the partitioning specification comprises examining the one or more reference columns, quantifying a number of distinct values in the one or more reference columns, and splitting the table into a number of two or more partitions based on the quantified number of distinct values, wherein the number of two or more partitions for the table is equal to the quantified number of distinct values, wherein each distinct value has a corresponding partition, wherein the partitioning specification further comprises placing the plurality of records into respective partitions such that records having same distinct value are placed together in a partition; setting, at the dynamic split node, a separate processing path of the plurality of processing paths for a respective partition of the table, wherein the separate processing path is assigned to a respective processing node of the plurality of processing nodes to generate one or more intermediate results used in a following execution operation of the calculation plan; and continuing execution of the following execution operation of the calculation plan using the plurality of processing paths to union the generated one or more intermediate results from each of the plurality of processing nodes and generate a union result, wherein the union result is used as an intermediate result by additional execution operations of the calculation plan if additional operations are required by the calculation plan, and wherein the union result is returned as a final result for the query if no additional execution operations are required by the calculation plan.