Just-In-Time Injection In A Distributed Database

A system, comprising:

• a memory;
• and
• a processor, the processor configured to executed instructions stored in the memory to:
• receive, from a query coordinator, a request for database results, wherein the request comprises a query execution instruction of a query plan and an indication of override instructions corresponding to the query execution instruction, and wherein the override instructions do not modify the query plan;
• include override instructions in a set of high-level language query instructions;
• perform just-in-time compiling of the set of high-level language query instructions to obtain a machine language query for performing the query execution instruction of the query plan;
• execute the machine language query to obtain the database results;
• and
• transmit the database results to the query coordinator.

A non-transitory computer readable medium storing instructions operable to cause one or more processors to perform operations comprising:

• receiving, from a query coordinator at a database instance of a distributed database, a request for database results, wherein the request comprises a query execution instruction of a query plan and an indication of override instructions corresponding to the query execution instruction, and wherein the override instructions do not modify the query plan;
• including, by the database instance, the override instructions in a set of high-level language query instructions;
• performing, by the database instance, just-in-time compiling of the set of high-level language query instructions to obtain a machine language query for performing the query execution instruction of the query plan;
• executing, by the database instance, the machine language query to obtain the database results;
• and
• transmitting, by database instance, the database results to the query coordinator.