A data querying system is disclosed that provides improved computer functionality that enables efficient permissioning and querying of specific portions of a data table, such that users (e.g., based on user roles or user attributes) are only allowed access to specific portions (e.g., particular data items/rows, and particular data items attributes/columns) of the data. The system advantageously provides efficient and improved querying and permissioning of specific portions of a data table through replication of the data table, or portions of the data table, and does not require permissioning of each individual cell of the data table. Further, the data table replication, querying, and permissioning techniques of the present disclosure, according to various implementations, advantageously integrate with a wide variety of data table query or search services to provide improved functionality, efficiency, and data permissioning.