Abstract: There is provided a computerized method and system of data management using extended Structured Query Language (SQL). The method includes executing an extended SQL script created in response to a data query request and comprising at least one operator of: a first operator embedding a SQL statement, or a second operator embedding a named entity. The executing comprises identifying the at least one operator in the extended SQL script; for each of the at least one operator, evaluating the embedded content thereof in runtime to dynamically generate SQL code based on a runtime input; replacing each of the at least one operator and the embedded content thereof in the extended SQL script with the generated SQL code thereof, giving rise to a standard SQL script; and running the standard SQL script to obtain a processing result of the data query request.