Processing multi-column streams during query execution via a database system

A database system comprising:

• at least one processor, and
• at least one memory that stores operations instructions that, when executed by the at least one processor, causes the database system to:
• determine a query operator execution flow that includes a serialized ordering of a plurality of operators for execution of a corresponding query against a database having a schema that includes a plurality of columns;
• and
• execute the query operator execution flow in conjunction with executing the corresponding query against the database based on:
• generating a first plurality of data blocks of a multi-column data stream as first output of a first operator of the plurality of operators, wherein each data block of the multi-column data stream includes column values for each of the plurality of columns;
• and
• processing the multi-column data stream as input of a second operator of the plurality of operators to generate a second plurality of data blocks as second output of the second operator, wherein the second operator is serially after the first operator in the serialized ordering.

A non-transitory computer readable storage medium comprises:

• at least one memory section that stores operational instructions that, when executed by at least one processing module that includes a processor and a memory, causes the at least one processing module to:
• determine a query operator execution flow that includes a serialized ordering of a plurality of operators for execution of a corresponding query against a database having a schema that includes a plurality of columns;
• and
• execute the query operator execution flow in conjunction with executing the corresponding query against the database based on:
• generating a first plurality of data blocks of a multi-column data stream as first output of a first operator of the plurality of operators, wherein each data block of the multi-column data stream includes column values for each of the plurality of columns;
• and
• processing the multi-column data stream as input of a second operator of the plurality of operators to generate a second plurality of data blocks as second output of the second operator, wherein the second operator is serially after the first operator in the serialized ordering.