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Trying to use merge join with operators named anything else will result in hopeless confusion , for reasons we 'll see in a moment . In addition to his primary duties , DeWitt is pursuing his Ph.D. in Computer Science at the University of Southern California , is the Officer-in-Charge of the Air Base Honor Guard , and is a senior scout leader in the community . It represents in my view a first step in a process to ensure that the multilateral trade agreements are not applied in a manner that neglects basic social needs . He is also responsible for managing the development of customer reference systems providing customers with insight and guidance on how to design platforms to support Intel ’ s next generation processors and chipsets . If the backend is running under the postmaster , error messages are still sent to the frontend process as well as to OutputFile , but debugging output is sent to the controlling tty of the postmaster ( since only one file descriptor can be sent to an actual file ) .