Data storage method and apparatus

A data storage apparatus, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium coupled to the processor and storing instructions for execution by the processor, wherein the instructions cause the processor to be configured to:
• obtain a primary index of a data object, wherein each row identifier of the primary index comprises a first field, a second field, a third field, a fourth field, and a fifth field, and wherein the first field comprises a first index field for the primary index;
• generate a secondary index of the data object according to the row identifier of the primary index, wherein each row identifier of the secondary index comprises the first field, the second field, and the third field, wherein the second field comprises a second index field for the secondary index, wherein the first index field and the second index field are different, and wherein each row identifier of the secondary index does not comprise the fourth field and the fifth field;
• and
• store the data object according to the primary index and the secondary index.

A computer program product comprising a non-transitory computer-readable medium storing instructions that when executed by a processor, cause the processor to be configured to:

• obtain a primary index of a data object, wherein each row identifier of the primary index comprises a first field, a second field, a third field, a fourth field, and a fifth field, and wherein the first field comprises a first index field for the primary index;
• generate a secondary index of the data object according to the according to the row identifier of the primary index, wherein each row identifier of the secondary index comprises the first field, the second field, and the third field, wherein the second field comprises a second index field for the secondary index, wherein the first index field and the second index field are different, and wherein each row identifier of the secondary index does not comprise the fourth field and the fifth field;
• and
• store the data object according to the primary index and the secondary index.