An apparatus, method and data structure for generating at least one table in a broadcast environment, are provided. The optimization of pooled statements may be performed responsive to the tracked usage of the statements in a statement pool, to direct the overhead associated with such optimization to those statements that are more likely to be utilized in the future. A beamforming weight is derived based on the generated test spatial signatures for beamforming by an antenna subsystem of the wireless communication system. A constriction connects the casing string with the rest of the lower drill string.