Repeat queries usually require parameters that take on different values each time the query is invoked. These parameters are represented by host variables in embedded SQL. OpenAPI does not support embedded host variable references and dynamic parameter markers cannot be used since the query is not being prepared (although the define/invoke mechanism appears similar to the prepare/execute scenario of dynamic SQL).

This section describes a parameter marker mechanism used by embedded SQL to implement support for host variables. An OpenAPI application can use this mechanism as an alternative to dynamic SQL for standard queries. The following section extends the parameter marker mechanism for use in repeat queries.