Multi-partition operation in combination operations

A computing system, comprising:

• one or more processing devices configured to:
• identify a first group of data entries of a first dataset that include a field-value pair and a second group of data entries of a second dataset that include the field-value pair;
• assign each data entry of the first group to one of a plurality of partitions, each partition of the plurality of partitions including a first subgroup having at least one data entry from the first group;
• and
• for a particular partition, form a combined subgroup based on values of data entries of the first subgroup and values of data entries of the second group.

Non-transitory computer readable media comprising computer-executable instructions that, when executed by a computing system, cause the computing system to:

• calculate a seed value based on a quantity of a first group of data entries of a first dataset that include a field-value pair and a quantity of a second group of data entries of a second dataset that include the field-value pair;
• assign, based on the seed value, each data entry of the first group to one of a plurality of partitions, each partition of the plurality of partitions including a first subgroup having at least one data entry from the first group;
• and
• for a particular partition, form a combined subgroup based on values of data entries of the first subgroup and values of data entries of the second group.