Executing differentially private query using structured language parsing

A method comprising:

• receiving, by at least one processor, a user query for execution;
• determining, by the at least one processor, whether the user query is a differentially private query;
• and
• in response to determining that the user query is a differentially private query:
• determining, by the at least one processor, input payload data for a privacy engine stored procedure based on a parse tree of the user query;
• generating, by the at least one processor, rewritten parse tree by rewriting the parse tree of the user query to call the privacy engine stored procedure with the input payload data;
• processing, by the at least one processor, the rewritten parse tree to execute the user query to generate a differential privacy-protected query result;
• and
• returning, by the at least one processor, the differential privacy-protected query result in response to the user query.

A machine-storage medium, the machine-storage medium including instructions that when executed by a machine, cause the machine to perform operations comprising:

• receiving a user query for execution;
• determining whether the user query is a differentially private query;
• and
• in response to determining that the user query is a differentially private query:
• determining input payload data for a privacy engine stored procedure based on a parse tree of the user query;
• generating rewritten parse tree by rewriting the parse tree of the user query to call the privacy engine stored procedure with the input payload data;
• processing the rewritten parse tree to execute the user query to generate a differential privacy-protected query result;
• and
• returning the differential privacy-protected query result in response to the user query.